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Double Rifles, Single Shots & Combinations >> Building Double Rifles & Gunsmithing

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Ron_Vella
.333 member


Reged: 29/04/05
Posts: 432
Loc: Oshawa, Ontario, Canada
Re: Double rifle project, calibre 9.3x74R [Re: Northman]
      #227147 - 17/03/13 11:08 AM

This job is close to being finished. All it requires is a bit of fine-tuning of the regulation and then final polishing and a rust blue. unfortunately, the last few months have been so darned cold and miserable that I decided to wait for warmer weather before sitting at the range and trying to shoot carefully over a Chrony while keeping careful records. I guess I'm getting soft in my old age.

To keep busy, I've started another build, this one a 6.5x57 Rimmed. I've finished turning, polishing, and chambering the barrels and am waiting on a throating reamer from Dave Manson to accomodate Nosler 140 grain Partitions, seated well out in the case. After searching for many months, last week I found a Zabala .410 bore in like-new condition for a host gun. More to come on this project.

One thing that I HAVE managed to get accomplished on the 9.3x74R job is to put together a case to hold both the rifle and the shotgun. I want a case with the nice looks and practicality of an English-fitted one, but one that is bullet-proof for travelling by air. I was fortunate to buy one of Cabela's heavy-duty aluminum cases, just before they discontinued them. I did away with the dense, grey foam that they come with, and English fitted the case in red felt. I'm very pleased with the results as I personally think that it looks good, is practical, and I could drive over the sealed case with my Yukon and not hurt a thing. Here are a couple of photos to show how it turned out:





Edited by CptCurl (20/03/13 10:16 PM)


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Matabele
.300 member


Reged: 16/09/10
Posts: 229
Loc: Zimbabwe
Re: Double rifle project, calibre 9.3x74R [Re: Ron_Vella]
      #227175 - 18/03/13 03:23 AM

Case looks great Ron, very functional and attractive!

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Ron_Vella
.333 member


Reged: 29/04/05
Posts: 432
Loc: Oshawa, Ontario, Canada
Re: Double rifle project, calibre 9.3x74R [Re: Matabele]
      #227179 - 18/03/13 05:03 AM

Matabele,
Thanks very much for the kind words. As info, I hunted Zimbabwe last September with Wayne Diedreksen of Jimba Safaris. We were based in the fantastic Sijaria Camp on the south shore of Lake Kariba. I was fortunate enough to take Buffalo, Sable, Klipspringer, and a crackerjack of a Chobe Bushbuck, all with the .450 #2 NE double that I built about 10 years ago. It doesn't get much better than that! Hope to be able to return to your country soon as my finances recover.

Best,
Ron.


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transvaal
.300 member


Reged: 19/01/13
Posts: 100
Loc: South Carolina
Re: Double rifle project, calibre 9.3x74R [Re: Ron_Vella]
      #227182 - 18/03/13 05:35 AM

Ron;

I like you double case very much and it looks strong enough to withstand the ground crew efforts at Jo-burg airport.

We do not see many of the BRNO ZP49 shotguns down here in the South and I continue to search for one. However, I have a question about the surface hardness of the BRNO action and sideplates. Are the action and sideplates soft enough to allow engraving without having to anneal them? What I have read about them leads me to believe that they are quite hard and it would take a "Carbalt" graver to engrave them (verses a high speed steel with 8% or so of cobalt added). Question because I am an amateur engraver as well as amateur rifle maker.

Regards;
Transvaal aka Steve


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Ron_Vella
.333 member


Reged: 29/04/05
Posts: 432
Loc: Oshawa, Ontario, Canada
Re: Double rifle project, calibre 9.3x74R [Re: transvaal]
      #227195 - 18/03/13 12:40 PM

Transvaal,
The BRNO guns are made from what the Czechs called Poldi Elektro Steel which I assume was made in an electric reduction furnace. It is of very high quality, strong, and in my experience is fairly resistant to corrosion though certainly not stainless. The guns that I have worked with were not surface-hardened and I would think could be cut with a regular high speed steel graver. About 10 years ago I built myself a double rifle in calibre .450 #2 Nitro Express on a BRNO ZP-49 action. That gun has AT LEAST 1000 full loads through it and is still going strong and shoots wonderfully for a double. The Sable that I referred to above was taken at 208 yards, which is a good range for any double. I believe that that speaks well for the quality of these BRNO guns.



Edited by CptCurl (20/03/13 10:16 PM)


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Matabele
.300 member


Reged: 16/09/10
Posts: 229
Loc: Zimbabwe
Re: Double rifle project, calibre 9.3x74R [Re: Ron_Vella]
      #227234 - 19/03/13 07:46 PM

Hey Ron. I'm really glad to hear you had such a great time in Zim, its a beautiful country with some fantastic hunting as you obviously found out (good shot on that Sable by the way!). Kariba is food for the soul, Ive got some great memories of family holidays spent there, fishing and toasting G&T sundowners on a houseboat drifting with the current. A good pal of mine recently got married on an island in Kariba near Bumi Hills, that was one we wont soon forget! I know of Wayne although have never met him, Ive seen him around Bulawayo when he's in town. A great PH Im sure.

Hope you do make it back to Zim!! Cheers for now.


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felix
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Reged: 02/12/12
Posts: 40
Loc: minas gerais, Brazil
Re: Double rifle project, calibre 9.3x74R [Re: Matabele]
      #228303 - 08/04/13 09:42 AM

ron
the weight of rifles ?
and what size barrel ?
9.3x74
450#2
I'm doing a 500 nitro and do not know how much leave


regars

--------------------
felix


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Even
.300 member


Reged: 28/12/12
Posts: 175
Loc: Canada
Re: Double rifle project, calibre 9.3x74R [Re: AkMike]
      #228326 - 08/04/13 08:42 PM

Ron, I really like how dark red your stock turned out. Fantastic color. I'd like to emulate that on a stock I have.

I see you used TruOil, and final finish with linseed, but what is the stain you use originally? It seems dark for Pilkington's English Red, unless its the multiple TruOil coats that make it that deep color?


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nitro450exp
.333 member


Reged: 06/09/07
Posts: 253
Loc: Michigan, USA
Re: Double rifle project, calibre 9.3x74R [Re: Even]
      #228384 - 09/04/13 10:44 AM

Ron,

Very nice work, Bravo.

Nitro

--------------------
"Man is a predator or at least those of us that kill and eat our own meat are. The rest are scavengers, eating what others kill for them." Hugh Randall

45/70 DR / 12ga Paradox
470 NE DR
12 Bore DR
20 Bore DR
450 NE SR
577 NE SR


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Ron_Vella
.333 member


Reged: 29/04/05
Posts: 432
Loc: Oshawa, Ontario, Canada
Re: Double rifle project, calibre 9.3x74R [Re: nitro450exp]
      #228388 - 09/04/13 11:25 AM

Felix, the .450#2 NE weighs 10.5 pounds without scope and has 25.5 inch barrels. The 9.3x74R weighs 9.5 pounds and has 26 inch barrels.

Even, The stain is Behlen's Blood Red. I buy it when I'm in the States because I've never seen it for sale in Canada.


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Even
.300 member


Reged: 28/12/12
Posts: 175
Loc: Canada
Re: Double rifle project, calibre 9.3x74R [Re: Ron_Vella]
      #228422 - 09/04/13 08:18 PM

Thank you sir, I'll keep an eye open for some. I've very much enjoyed this thread. Your craftsmanship is superb.

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Sville
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Reged: 23/03/10
Posts: 1189
Loc: Sweden
Re: Double rifle project, calibre 9.3x74R [Re: Even]
      #228426 - 09/04/13 11:12 PM

Very good craftmanship in this project, nice work all of it!! /Staffan

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Caprivi
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Reged: 30/09/08
Posts: 811
Loc: America's Serengeti, Buffalo W...
Re: Double rifle project, calibre 9.3x74R [Re: Sville]
      #228432 - 10/04/13 12:54 AM

As to the Behlen's. Here is where I get mine, as well as a few other colors I use.

http://www.woodcraft.com/product/2007234/24144/behlen-solarlux-stain-blood-red-pint.aspx


As with most chemicals anymore, shipping by Air is stated as being prohibited.




Ron, just wonderful work you have done. Top nic. Not just the mechanics but the narative as well, we are all indebted to you for a great story line, Thank you for that.

--------------------
To live life as it is handed to me from God


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Caprivi
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Reged: 30/09/08
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Loc: America's Serengeti, Buffalo W...
Re: Double rifle project, calibre 9.3x74R [Re: Caprivi]
      #228433 - 10/04/13 12:56 AM

Postscript........ Behlen's Rottenstone is by far the best cutter I have used. I recommend it unwaveringly.

--------------------
To live life as it is handed to me from God


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Daryl_S
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Reged: 10/08/05
Posts: 21150
Loc: Beautiful British Columbia, Ca...
Re: Double rifle project, calibre 9.3x74R [Re: Caprivi]
      #228435 - 10/04/13 01:06 AM

Very impressive, Ron.

--------------------
Daryl


"a rifle without hammers, is like a Spaniel without ears" Edward VII


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Ron_Vella
.333 member


Reged: 29/04/05
Posts: 432
Loc: Oshawa, Ontario, Canada
Re: Double rifle project, calibre 9.3x74R [Re: Daryl_S]
      #228438 - 10/04/13 02:17 AM

Are they holding you prisoner in BC? You never HAVE made it here for a visit!

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gallatin
.224 member


Reged: 30/05/07
Posts: 44
Loc: Olympia,Wa. USA
Re: Double rifle project, calibre 9.3x74R [Re: AkMike]
      #229684 - 04/05/13 06:35 AM

Ron,
Can you speak a bit about the prep prior to soldering in the barrels into the monoblock? Does NEF threads allow enough room for the solder to flow, and pretining/fluxing is that different than say soldering the ribs in place?
Thanks in advance for your thoughts,
John


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Ron_Vella
.333 member


Reged: 29/04/05
Posts: 432
Loc: Oshawa, Ontario, Canada
Re: Double rifle project, calibre 9.3x74R [Re: gallatin]
      #229772 - 06/05/13 12:58 PM

John, Here's how I do it. Flow solder onto all of the mating surfaces of the mono-block and the barrels, using an ACID flux to wet the steel. While still hot and solder is molten, brush away as much solder as possible, using a brass-bristle, wooden handled brush, one of those ones about the size of a toothbrush that you see for sale at all of the gun shows. Once things are cool, wash everything well with hot soapy water to remove the acid flux residue, else you risk after-rusting of the assembly. I get someone to help me with final assembly because it really needs four hands. Start by painting all of the pre-tinned mating surfaces with a liquid ROSIN flux. Mount the mono-block in a bench vise, holding it by the under-lugs. Heat the shank of one barrel and the mono-block until the solder starts to melt, start screwing barrel into the mono-block, and feed solder, and more rosin flux as needed, onto the barrel threads. Continue this process until you have the barrel screwed VERY TIGHT into the mono-block. I find it best to switch things around at this point, gripping the barrel in padded jaws of the vise and using an apropriately-sized open-end wrench on the barrel lugs, for extra leverage, in order to get things REALLY TIGHT. Repeat with the second barrel and you are done.

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transvaal
.300 member


Reged: 19/01/13
Posts: 100
Loc: South Carolina
Re: Double rifle project, calibre 9.3x74R [Re: Ron_Vella]
      #229786 - 07/05/13 02:54 AM

Ron;

Have you completed the barrel regulation of the 9.3x74R, and if you have how is the accuracy?

Kindest Regards;

Steve Howell


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gallatin
.224 member


Reged: 30/05/07
Posts: 44
Loc: Olympia,Wa. USA
Re: Double rifle project, calibre 9.3x74R [Re: transvaal]
      #229906 - 10/05/13 01:29 PM

Ron thanks for the info on solder and found an older post of yours on soft and high temp also. I notice that everyone who uses the existing monoblock leaves the rib on when cutting the barrels off.
Would it matter if one raised the top and bottom ribs prior to cutting Seems like there must be a good reason for leaving it on though I don't know what it is. Some of you thread the whole barrel shank and some thread a portion and leave a portion unthreaded, would an argument for this have to do with the shape of the bore and how much "meat" is left to thread. Thanks in advance for everyone comments
John


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Ron_Vella
.333 member


Reged: 29/04/05
Posts: 432
Loc: Oshawa, Ontario, Canada
Re: Double rifle project, calibre 9.3x74R [Re: gallatin]
      #230126 - 16/05/13 07:08 AM

I finally got to the range today and shot this rifle. The attached photo shows the results. The barrels are shooting 6" apart at 50 yards and the left is about 3.5" higher than the right. The group from the right barrel, as you see is fabulous. The left is all over the place. When I got home I decided to check the crown on the left barrel and sure enough it had several bad burrs in it. I've honed those away and hopefully this cures the problem. I used my new regulating jig to bring the muzzles together by .006" and raise the right barrel by .003" relative to the left. Next shooting, probably Friday, will show the results of this.



Edited by CptCurl (01/07/13 09:09 PM)


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Huvius
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Reged: 04/11/07
Posts: 3082
Loc: Colorado
Re: Double rifle project, calibre 9.3x74R [Re: Ron_Vella]
      #230129 - 16/05/13 09:17 AM

Ron, I have to admit that I am envious of your abilities.
Building a double rifle of quality and accuracy must be one very gratifying experience.

--------------------
He who lives in the past is doomed to enjoy it.


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Rhodes
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Reged: 20/09/11
Posts: 83
Loc: NQ, Australia
Re: Double rifle project, calibre 9.3x74R [Re: Huvius]
      #230145 - 16/05/13 07:57 PM

Good stuff Ron

.001" adjustment per 1" @ 50 yards

have you found this to be a good rule of thumb with your other doubles?


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Ron_Vella
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Reged: 29/04/05
Posts: 432
Loc: Oshawa, Ontario, Canada
Re: Double rifle project, calibre 9.3x74R [Re: AkMike]
      #230162 - 17/05/13 02:26 AM

Rhodes,
I've found that .001" per inch is a good place to start. Better to go up in small steps than to jump all over the place in large ones! No hard and fast formula though that I've discovered. It's more like the witches in the opening scene of Macbeth: "Double, double, toil and trouble...eye of newt..and all that jazz".


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Ckhobart
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Reged: 26/06/13
Posts: 84
Loc: Reno, NV
Re: Double rifle project, calibre 9.3x74R [Re: Ron_Vella]
      #231884 - 30/06/13 08:56 AM

Stunning. Absolutely stunning.

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