Mike_Bailey
(.400 member)
11/04/08 05:53 PM
front or rear trigger

Hi all, a question. When I have fired a .375 H&H double rifle I normally fire the front trigger first then the rear. However, I notice in a couple of books offering advice, including Lou Hallamore in his book "In the Salt" which seems to me to be full of sound advice, that he advises on the big bores, presumably .450 and up to pull the rear trigger first to avoud accidentally doubling. He does go on to say that this observation will make his fello pros groan but I am interested in your thoughts out there. In a few weeks my .470 double will be arriving and I don't fancy getting both barrels at the same time. Is there a good way to "practice" ? I have fired a double .375 numerous times but a .470 only 4 or 5. Recoil was stout but not nasty in an 11lb rifle. Help please, best, Mike

CptCurlAdministrator
(.450 member)
11/04/08 08:46 PM
Re: front or rear trigger

Mike,

My advice is to fire the front trigger first, just as is normal. Changing your routine is a mistake. All your moves must be subconscious and without thought.

The key is to place your finger on the trigger up to the first knuckle. You are not shooting a match bolt rifle. Forget what you have learned about just placing the tip of your finger on the trigger. If you just place the tip of your finger on the front trigger, your finger may slip off during recoil and come back to tap the rear. Kinda like playing harp strings!

If this should happen, it's not the end of the world. I have doubled my .500 NE and lived to tell about it.

Practice is what you want. Practice a lot. The more you shoot the rifle, the more familiar it becomes.

Good luck,

Curl


Will
(.333 member)
12/04/08 01:05 AM
Re: front or rear trigger

Do whatever you want. I preferred pulling the rear trigger first. Just one less thing to go wrong.

bwananelson
(.400 member)
12/04/08 01:09 AM
Re: front or rear trigger

i also learned i doubled the 470 pushed me back 3-4 steps but did dot kill me or damage my merkel.till yo get the hang of it put a live round in and a round with just a primer lets you know you f----- up but wont hurt you or your baby.he is right forget the bolt way learn the double use that last joint on that index finger.both did print a nice group though but i dont want to do that to many times again

zimhunter
(.333 member)
12/04/08 02:07 AM
Re: front or rear trigger

I fire the rear trigger first. It's just as easy to learn to fire the rear first as it is to push your finger further thru the trigger guard. I have no problem in the field firing the rear first.

JabaliHunter
(.400 member)
12/04/08 04:07 AM
Re: front or rear trigger

Yep - made me groan too!!
The only reason to use the rear trigger first is if you shoot a right handed rifle off your left shoulder, which in a .470 would not be advisable. JMHO


Marrakai
(.416 member)
12/04/08 11:23 AM
Re: front or rear trigger

What Curl said!

With respect to bwananelson, I would have a good think about whether you should put a primed case in the 2nd barrel to test whether you 'double' or not. Others have found that with certain action types (non-rebounders, I guess), the firing pin is not pushed back out of the primer by the pressure of firing, and the pin can stick in the primer and lock the action shut. If this happens, you may need to remove the LHS lock and manually withdraw the pin, or if a boxlock, remove the floor-plate and manually re-cock the left tumbler with a screw-driver or similar.

It's easy with an ejector, just put a snap-cap in the left barrel and see if it spits out when you open the gun!


BTW, I'm groaning too! ...but I do use the left barrel for deliberate single shots when I remember, as in a finisher when the quarry is down.


Just a thought: those of us brought up on bird-shooting with SxS shotguns have fired literally tens of thousands of rounds in a lifetime and never doubled once!


JPK
(.375 member)
12/04/08 02:22 PM
Re: front or rear trigger

Front trigger first, as you would typically with a double shotgun.

I don't have any problem with just the "tip" of my trigger finger on the front trigger, but use the first joint on the rear since the closer trigger feels more natural with more finger on it.

Try the snap cap in the left barrel to make sure you aren't loosing control of your hand and fingers under recoil. This is the cause of (most) doubling, and it is only correctable error.

I'ma a lefy shooting right actioned rifles and shotguns, and so my trigger finger extends across the rear trigger. If anyone was going to have trouble controlling their hand and so trigger finger sufficiently and causing a double, it would be me becuase of the right/left trigger location. But tens and tens of thousands of rounds through double trigger guns, mostly shotguns, have yet to produce a double.

JPK


wombat
(.300 member)
12/04/08 03:24 PM
Re: front or rear trigger

After doubling twice in a row on my first buf hunt with my 500 double I vowed "never again"I purchased a SXS shotgun,had the triggers functions reversed and went (and still go) clay bird shooting using the rear trigger first.You would be amazed how fast you can move to the front trigger.You can easily dust a big chip in the air from a first barrel hit-asumming a true aim,which is where I usually have the problem.The tension,heat and sweaty hands
that happen (to me at least)when close to dangerous game are never duplicated at the range or wing shooting-hence my rear trigger first procedure


mickey
(.416 member)
12/04/08 03:58 PM
Re: front or rear trigger

Quote:

Do whatever you want. I preferred pulling the rear trigger first. Just one less thing to go wrong.




Why would you try and defeat the design of the rifle by shooting rear trigger first?

Wouldn't it be easier to just learn how to shoot correctly?


450_366
(.400 member)
12/04/08 05:09 PM
Re: front or rear trigger

Why not check how the double is regulated, then you would now. If not possible take it apart and see if you could make a difference how the sear is stoned (which one is the one with the largest bite). I bet its not the front trigger.

Anyhow dont think just put the rifle to the shoulder and shoot imediatly when it lands on you and as quick as you are able fire the next barrel.

Thats how you should shoot.


DarylS
(.700 member)
13/04/08 01:36 AM
Re: front or rear trigger

Elmer Keith liked the rear trigger first, using the recoil to move his finger to the front trigger, but it's something I could not get used to.

mickey
(.416 member)
13/04/08 03:15 AM
Re: front or rear trigger

Elmer Keith is an interesting read but he is far from a knowledgable authority on Double Rifles.

A Double Rifle is designed to shoot the front trigger first. The front trigger is outboard of the rear to make it easier to locate and the length of pull on a properly fit rifle allows the trigger finger to automatically fall onto the front. A proper technique of placing the first joint on the trigger and a steady pull will not allow for the finger to slip and Double the rear. The Front trigger has a crisper pull and a lighter let off to make an easier first shot.

The rear trigger is inboard of the front trigger to make it harder to hit on a slip caused by poor technique. The rear also has a longer pull and a stiffer let off, needing more pressure. It is also located too far to the rear on a correctly fit rifle to allow for a natural fit. It is located perfectly for a fit on recoil though.

Learning the proper technique is usually the best way to do most things, from fly fishing to shooting

If you want an interesting read on two versions of the same event read Elmer Kieth's story about guiding Prentice Grey through the Parsnip River Country of BC. Then read Grey's book on the hunt where he devoted two whole paragraphs to 'the little horse wrangler from Montana who he almost fired for being such a screw up.'

Both entertaining stories.


Will
(.333 member)
13/04/08 10:36 AM
Re: front or rear trigger

Quote:

Quote:

Do whatever you want. I preferred pulling the rear trigger first. Just one less thing to go wrong.




Why would you try and defeat the design of the rifle by shooting rear trigger first?

Wouldn't it be easier to just learn how to shoot correctly?




Mickey, Mickey, Mickey ....

I am afraid you double experts are stuck in tradition to the extent as to ignore any practical aspects.

Like I said folks should do what they want, whatever works out for them. With all due respect, pulling the front trigger first being the correct way is just nonsense (sorry). Keith notwithstanding, there have been a bunch of very experienced elephant hunters that pulled the back trigger first.

In a panic it was much more natural for me to pull the front trigger first but was always rear trigger challenged in getting off that second shot. You can call it a mental deficiency on my part; I don't care. Hence, I "trained" myself to pull the rear trigger first and the front trigger second. Big deal.

I about got myself killed once screwing around trying to remember to pull the rear trigger after I had pulled the front trigger. I pull the rear trigger first regardless of tradition or the correctness of that procedure.

On the other hand, the double I am making has a single trigger. Wee wee on those double triggers.


DarylS
(.700 member)
13/04/08 11:18 AM
Re: front or rear trigger

Elmer may not have been an authority on doubles. He did, however do a damn site more hunting with one, in Africa, Idaho and Alaska than I ever will and probably more than anyone on this forum has done as well. We do seem to have a lot of experts here, though with more knowlede than he had.
: I merely stated what someone with great experience in hunting and some experience with doubles preferred, not that it was the proper way to do it.


JabaliHunter
(.400 member)
13/04/08 09:09 PM
Re: front or rear trigger

[quoteI "trained" myself to pull the rear trigger first and the front trigger second. Big deal. I about got myself killed once screwing around trying to remember to pull the rear trigger after I had pulled the front trigger. I pull the rear trigger first regardless of tradition or the correctness of that procedure. On the other hand, the double I am making has a single trigger. Wee wee on those double triggers.



Well if you can train yourself to do it the "wrong way", you can train yourself to do it the "right way" too !
How many olympic athletes make it to the top of their sport by using bad technique? Not many.
On a personal level, I hate single triggers and won't buy a gun with them - but only because I learnt on double triggers and would have to retrain myself. I can do it and have shot many 100 bird flushes at the sporting clays layout with ST - but I am always more successful with the DT guns I was trained on and using them as they were designed.
Its all about training and good technique. Training with bad technique will only get you so far..
JMHO


Will
(.333 member)
14/04/08 12:02 AM
Re: front or rear trigger



I am wanting for someone to tell me why pulling the rear trigger second is the correct way of doing things.

If single triggers are good enough for Westley Richards and was good enough for Jimmy Sutherland it is good enough for me.

I don't see how it matters really to anyone what trigger the hunter pulls first. Do whatever you want.

I know it is tradition but I also fail to see the need for two triggers to begin with. I have yet to hear an actual big game experience where a tourist hunter went about only shooting one barrel because the other trigger mechanism failed.

So much of what is available in the retail, new double market today is accepted as the standard because that is what is available. For example, it seems that many manufacturers, but not all, are making barrels to fit their existing receivers regardless of the caliber. A 450/400 gets made on a 600 NE frame. A 470 NE barrel has the same profile as a 500 NE and the 470 winds up weighing more than the 500! Try to justify that one. I had a rep of one of the European maufacturers, which make exquisite doubles, at the SCI Reno show refuse to even talk to me about a single trigger.

Of course I have my own prejudices such as single triggers, lightweight, ejectors, and all that.

Do whatever you think is best.


Bramble
(.375 member)
14/04/08 12:17 AM
Re: front or rear trigger

I cannot realy subscribe to the right way wrong way thing when dealing with double trigger double gun. Especially shotguns.

There are many situations where one might have cause to fire the barrels in different orders as they are choked differently.

If shooting driven Partridge, then one might wish to fire the choke barrel first and then the cylinder/1/4 barrel as the birds get closer. Crossing Grouse may well be dealt with the opposite way around. Going away birds open first choke second, incomers the other way around. Crossers either way depending on where one wants to kill them.

So IMHO there is no point in training to fire a double only in one order. Better to be entirly familier with the gun and to use it the way that suits best.
Personaly for deliberate fire with a D rifle I prefer to use the rear trigger first as I prefer the trigger angle and find that I have more feel for the break than the straighter front trigger blade.

I think however that in the end it comes down to personal preference and familarity.

Regards


bouldersmith
(.375 member)
14/04/08 12:31 AM
Re: front or rear trigger

I think the fact that the first gun I owned was a double with 2 triggers given to me on my 12th birthday by my father has helped me. I never understood peoples problems with a 2 trigger gun....seems natural to me and I don't care for the single trigger. That said....its what works for you. I naturally pull the front trigger and slide to the rear after the shot during my remount. The idea of a single trigger on a double, no offense to either Westley or Mr. Sutherland(or you Will), is just....yuck! Too each thier own, but a single trigger is a deal killer for me.....I just couldn't live like that.
Steve


JPK
(.375 member)
14/04/08 12:58 AM
Re: front or rear trigger

Quote:

I cannot realy subscribe to the right way wrong way thing when dealing with double trigger double gun. Especially shotguns.

There are many situations where one might have cause to fire the barrels in different orders as they are choked differently.

If shooting driven Partridge, then one might wish to fire the choke barrel first and then the cylinder/1/4 barrel as the birds get closer. Crossing Grouse may well be dealt with the opposite way around. Going away birds open first choke second, incomers the other way around. Crossers either way depending on where one wants to kill them.

So IMHO there is no point in training to fire a double only in one order. Better to be entirly familier with the gun and to use it the way that suits best.
Personaly for deliberate fire with a D rifle I prefer to use the rear trigger first as I prefer the trigger angle and find that I have more feel for the break than the straighter front trigger blade.

I think however that in the end it comes down to personal preference and familarity.

Regards




Bramble's point is a good one, as he states there are many situations where with a shotgun the rear trigger is the one to pull first. I'll add a few more commonly encountered on our side of the pond, duck and goose shooting over decoys, dove shooting, for examples.

{Off topic aside: On the other hand, I have a second set of barrels, all barrels bored 1/4 choke (about light modified for US readers), for my driven bird pair of guns since I find 1/4 choke to be neither too little nor too much for every situation. And on occasion I've seen a pair where one of the pair has the tight barrel fired by the front trigger.}

I don't have any issue with this with game gun weight 12ga shotguns. But I find that with the recoil of a big bore rifle, the rear trigger is right there for the second shot, but I have to reach forward for the front trigger.

Will, if a single trigger suits you, then you should use a single trigger. The reason that some makers don't want to talk single trigger is that that maker hasn't yet figured out how to make one 100% reliable, imo. And yes, I've seen several malfunctioning single trigger shotguns - but never a rifle since there just aren't all that many. The thin risk of a single trigger failing when that ele is in front of you and hostile is way too thin for concern, imo.

JPK


JabaliHunter
(.400 member)
14/04/08 03:53 AM
Re: front or rear trigger

All good points.
I would only point out the distinction between a deliberate shot when you want to fire the left barrel, such as to take advantage of a tighter choke or deliberate single shots with a DR where you want to avoid wearing out the right barrel and a rapid, instinctive 1-2 at a charging ele
I'll bet that regardless of how much you practice, the chap firing front/rear will be faster than the one firing rear/front.
You can't beat evolution - your finger moves faster pulled towards you than pushed away.
At the end of the day, to each his own though - better two triggers than one!! just kidding


Will
(.333 member)
14/04/08 04:41 AM
Re: front or rear trigger

I know this all for fun, but some are getting desparate to justify this trigger thing!

Just to stir it up, I don't much care for the third bite thing either, as when reloading I just see it as another hinderance, just getting in the way.

And if you fire the rear trigger first, the left barrel is faster to reload than the right fo a right handed shooter. How about that for splitting hairs?

And just to make matters worse, the double I'm getting built has a selective trigger. There goes the "wearing out the right barrel first argument" and "selecting which barrel, soft or solid to shoot" argument.

Bring it on!


zimhunter
(.333 member)
14/04/08 05:46 AM
Re: front or rear trigger

Hang in there Will you DO have support. I will say that the subject of Double Rifles is one of the few areas where logic does not prevail. I'll bet all these proponents of the CORRECT way of shooting doubles hold their fork in the one hand only and never change hands when cutting. That should really stir things.

450_366
(.400 member)
14/04/08 06:05 AM
Re: front or rear trigger

Well if one wants only one trigger there are semiauto rifles that people use for hunting, at least thats is what i have heard. And you get more rounds than a double also, not forgetting you are away from the trouble to reregulate when changing ammo.

To bad they are not allowed in most african countrys.


Will
(.333 member)
14/04/08 07:05 AM
Re: front or rear trigger

Here we go.

DUGABOY1
(.400 member)
14/04/08 07:18 AM
Re: front or rear trigger

If your rifle regulates properly shooting the rifle left barrel first, then do it that way if it works better for you! Some doubles won't regulate properly, back trigger first!

DUGABOY1
(.400 member)
14/04/08 08:06 AM
Re: front or rear trigger

Quote:

Elmer may not have been an authority on doubles. He did, however do a damn site more hunting with one, in Africa, Idaho and Alaska than I ever will and probably more than anyone on this forum has done as well. We do seem to have a lot of experts here, though with more knowlede than he had.
: I merely stated what someone with great experience in hunting and some experience with doubles preferred, not that it was the proper way to do it.




Elmer is one of my all time favorites in the gun rag business, and he did a lot of hunting in Alaska, Wyoming, and Idaho. He did some hunting in Africa as well but not a lot! If you want to know what Elmer's preference was it was not rear trigger first, in most cases! His preference was for a single trigger on a double rifle! Adtionally, Elmer was a real expert on lever action rifles, pistols of all kinds, but prefered revolvers. Most of his hunting with a rifle that was not a lever action, was with a bolt rifle! He owned a few doubles over the years, but most were single trigger rifles by Westley Richards. The Westley Richards is something I totally agree with Elmer on, but the single trigger I definently do not.

A single trigger is the only single item on a double rifle that will put the rifle out of service completely if it breaks. That has nothing to do with shooting the left barrel first, however! The reason the trigger is lighter on the right barrel is because that is the first one fired by the regulator, so that is cut with a light pull, and that is why the "SET" trigger is on that trigger, because the first shot is usually the more precise, on an un alarmed animal, and the back trigger is cut for a heavier pull, because it avoids doubleing, to some extent, and is uaually the second shot, on an incoming, or running away animal, and a light trigger is not needed. Fireing the back trigger first to avoid a double discharge, is somtimes the cause of a doubleing because the recoil of fireing the left barrel sets off the light trigger on the right barrel.

In the case of, rear trigger first, it is one's personal choice! However, there those here, and other places on the internet, that disclaim the fact that a right handed double rifle with two triggers is "DESIGNED" to be fire front trigger first! The rifles are regulated that way at the makers,, and the trigger engagement is cut for that sequince of fire. The front trigger is always lighter than the back trigger. There is a reason for that! If you look at any rifle that has a set trigger on one of the triggers, it will always be the front trigger on a right handed rifle. There is a reason for that, as well!

It make no difference to me how one shoots "HIS" double rifle, but mine are fired front trigger first!


Kalunga
(.333 member)
14/04/08 08:29 AM
Re: front or rear trigger

One of the real advantages of a double is without doubt the possibility to load a solid in one barrel and a soft in the other. I think the makers of good doubles are aware of this fact and they design their locks accordingly. So it should be no problem to fire either barrel first without the risk of doubling. Also I believe that that the POI will not change too much at reasonable hunting distances if You discharge the left barrel first, at least if You use open sights.
So I wonder where the problem is !

Kalunga

"In my profession my needs are few, a dependable rifle, a cool nerve and a really good pair of boots !"


Bramble
(.375 member)
14/04/08 09:08 AM
Re: front or rear trigger

With the greatest of respect. I believe that the difference in felt pull weight between front and rear triggers, has far more to do with the angle of force and the distence from the pivot to the moment of force (the finger) than differing sear release pressures.

With the rear trigger on a double trigger gun the trigger finger has to move the trigger in a more upward fashion at the same time as to the rear. The front trigger pivots more naturally around the pin. The front trigger is generaly also longer reducing the pressure needed to trip the sear.

Regards.


JabaliHunter
(.400 member)
14/04/08 09:19 AM
Re: front or rear trigger

There are those that shift gears in their cars out of sequence too!!

Will
(.333 member)
14/04/08 09:37 AM
Re: front or rear trigger

You guys give in yet?

JPK
(.375 member)
14/04/08 09:57 AM
Re: front or rear trigger

Quote:

With the greatest of respect. I believe that the difference in felt pull weight between front and rear triggers, has far more to do with the angle of force and the distence from the pivot to the moment of force (the finger) than differing sear release pressures.

With the rear trigger on a double trigger gun the trigger finger has to move the trigger in a more upward fashion at the same time as to the rear. The front trigger pivots more naturally around the pin. The front trigger is generaly also longer reducing the pressure needed to trip the sear.

Regards.




I believe that Bramble is correct on this point. I had both of the triggers on my big bore double lightened to very close to the same pull weight, but the rear trigger "feels" heavier by a noticable amount (at least when you are shooitng off a stnding bench, abosolutely no noticable difference with an elephant in front of you!)

I believe that it is both the mechanical leverage of the trigger and the relative position of the trigger finger itself.

But this isn't to say that many or most or ? rifles don't leave the maker with heavier rear triggers. I will say that way too many, or most, leave with too heavy trigger pulls.

BTW, the rifle shoots equally well right or left barrel first.

JPK


DarylS
(.700 member)
14/04/08 12:25 PM
Re: front or rear trigger

My favourite rifle has two triggers and I always pull the rear trigger first.
: The 'click' the rear trigger makes merely sets the front trigger.


Will
(.333 member)
14/04/08 07:56 PM
Re: front or rear trigger

Quote:

With the greatest of respect. I believe that the difference in felt pull weight between front and rear triggers, has far more to do with the angle of force and the distence from the pivot to the moment of force (the finger) than differing sear release pressures.

With the rear trigger on a double trigger gun the trigger finger has to move the trigger in a more upward fashion at the same time as to the rear. The front trigger pivots more naturally around the pin. The front trigger is generaly also longer reducing the pressure needed to trip the sear.

Regards.




All that could be true if the trigger mechanisms are made that way, but it doesn't have to be that way. The moment arm of any lever is just the force times the distance, as you stated. I defer to the more knowledgable whether the makers ever take that into account.

The two triggers could be adjusted to give the same "apparent" finger pressure to trip them. The same must be true for single triggers also.


450_366
(.400 member)
14/04/08 08:54 PM
Re: front or rear trigger

Take a triggerscale and messure your pulling weights, mine increases 1kg from front to rear. But its a shotgun so probably its not even close in construction of a DR.

Seen doubles with hairtriggers on both, anyone out there with only one?


JPK
(.375 member)
14/04/08 11:21 PM
Re: front or rear trigger

Like I posted earlier, even when the trigger weights have been adjusted to known pulls, checked with actual weights in my rifle's case, the "felt" pull is greater for the rear trigger.

I like my trigger pulls between three and four pounds.

I have a rifle with lighter pulls that is scheduled to "go under the knife" to have the pulls adjusted upward to 3lbs to 3 1/2lbs. I find the too light pulls to be hard to shoot well, just as I find too heavy pullsto be hard to shoot well.

JPK


Bramble
(.375 member)
15/04/08 12:53 AM
Re: front or rear trigger

Will

If you pull a set of sidelocks and triggers off an english gun. In the main the sears sit paralell
to each other and are efectivly mirror copies of each other.
The triggers share the same fulcrum but the rear is about twice the distence from the fulcrum and discribes a different arc.

You can get them the same, but not at too light a weight as if the front trigger trips the sear at 4lbs say then the rear trigger would have to have a sear that trips at half that weight to maintain the same trigger weight.

So in the above instence you could have a rear sear that trips at 2lbs, I would not be happy with that especially on a hard recoiling gun.

Now if both triggers were made to trip at 8 lbs then perhaps that would be OK.

The math is not quite that simple however I hope you get my drift. The figures are made up by the way for exemplar purposes only.


JPK
(.375 member)
15/04/08 02:05 AM
Re: front or rear trigger

Below is the Hallowell website that shows photos of the lockwork for a bar action and back action sidelock as well as a photo of a two trigger gun which indicates the forward position of the common trigger pin, or common location if not a common, shared pin, around which the levers rotate.

http://www.hallowellco.com/boxlock.htm#Bar-Action

If someone knows how to post the actual photos that would be great since this is an interesting issue.

The blade of the rear trigger is further from the pin than the front trigger blade and perhaps this makes the rear trigger more mechanically advantaged, but then the length of the two triggers' levers as measured from pin to sear lever is equal.

Any engineer want to answer the question of whether the leverage is equal or advantaged for one or the other?

FWIW, the two locks show two sears each, one on each lock is engaged and the other on each lock is a secondary or safety sear designed to catch the tumbler, aka hammer,
from falling home in case the primary sear is knock out of engagement by cause other than the approporiate trigger being pulled. When the appropriate trigger is pulled, both sears are rotated so that the tumbler can fall freely.

JPK


DUGABOY1
(.400 member)
15/04/08 02:11 AM
Re: front or rear trigger

Quote:

One of the real advantages of a double is without doubt the possibility to load a solid in one barrel and a soft in the other. I think the makers of good doubles are aware of this fact and they design their locks accordingly. So it should be no problem to fire either barrel first without the risk of doubling. Also I believe that that the POI will not change too much at reasonable hunting distances if You discharge the left barrel first, at least if You use open sights.
So I wonder where the problem is !

Kalunga

"In my profession my needs are few, a dependable rifle, a cool nerve and a really good pair of boots !"




I carry my doubles that way when hunting buffalo, but it has nothing to do with the order of pulling triggers other than I always carry a soft point in the right barrel! I like the first shot on a Buffalo to be a soft, followed by all solids! I don't hunt Elephant, but if i did then the rifle would always be loaded with solids in "BOTH" barrels!, and I would still pull the front trigger first in both cases!


DUGABOY1
(.400 member)
15/04/08 02:54 AM
Re: front or rear trigger

Quote:

With the greatest of respect. I believe that the difference in felt pull weight between front and rear triggers, has far more to do with the angle of force and the distence from the pivot to the moment of force (the finger) than differing sear release pressures.

With the rear trigger on a double trigger gun the trigger finger has to move the trigger in a more upward fashion at the same time as to the rear. The front trigger pivots more naturally around the pin. The front trigger is generaly also longer reducing the pressure needed to trip the sear.

Regards.




The pull weights are actually cut with the front trigger lighter than the back. This is measurable with a trigger pull scale! The recoil of one barrel going off is what sets off the second barrel in a double that is prone to mechanical doubleing, and the fix is to build up the sear surfaces and re-cut the offending trigger. If a double is habitually doubleing when the first shot is taken, if you reverse the trigger pull the rifle will not usually double.

The trigger pulls are set differently for two reasons! #1 is because when fireing the right barrel, with a less than perfect hold on the rifle by the trigger hand, the finger will sometimes hit the back trigger setting it off as well, #2 because the recoil from the right barrel going off may disengage the sear on the left lock, if it is cut too lightly. These two reasons are the same reasons the right trigger is always the trigger that is fitted with a set trigger, if the rifle has one!

If your rifle works fine pulling the back trigger first, then do so! However because it does doesn't change the fact that the rifle was designed to be fired 1, Right, 2, Left, on a right hand rifle, and is set opposite on a left hand rifle.


DUGABOY1
(.400 member)
15/04/08 03:09 AM
Re: front or rear trigger

Quote:

Below is the Hallowell website that shows photos of the lockwork for a bar action and back action sidelock as well as a photo of a two trigger gun which indicates the forward position of the common trigger pin, or common location if not a common, shared pin, around which the levers rotate.

http://www.hallowellco.com/boxlock.htm#Bar-Action

If someone knows how to post the actual photos that would be great since this is an interesting issue.

The blade of the rear trigger is further from the pin than the front trigger blade and perhaps this makes the rear trigger more mechanically advantaged, but then the length of the two triggers' levers as measured from pin to sear lever is equal.

Any engineer want to answer the question of whether the leverage is equal or advantaged for one or the other?

FWIW, the two locks show two sears each, one on each lock is engaged and the other on each lock is a secondary or safety sear designed to catch the tumbler, aka hammer,
from falling home in case the primary sear is knock out of engagement by cause other than the approporiate trigger being pulled. When the appropriate trigger is pulled, both sears are rotated so that the tumbler can fall freely.

JPK



Here you go!






JPK
(.375 member)
15/04/08 08:28 AM
Re: front or rear trigger

Thanks Mac!

JPK


greenshoots
(.300 member)
24/05/08 02:17 AM
Re: front or rear trigger

well im left eye dominant shot off my left shoulder right handed gun so pulling the rear trigger first comes natural............

viv



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