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Double Rifles, Single Shots & Combinations >> Double Rifles
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Bulletproof
.224 member


Reged: 10/01/05
Posts: 8
Loc: Alberta Canada
Regulating medium caliber rifles.
      #52984 - 22/03/06 07:37 AM

Hey guys,

I went out to shoot my dad' snew Fraser 303 double today to get an idea where to start for regulation.

I fired some factory winchester 180 grain bullets at 50 yards and the gun shot apart by about 4 inches. Each barrel went into about an inch.

Now I know these factory loads are anemic and that coupled with the worn throat leads me to believe that velocities were quite low.

I am planning on working up a load to see if it closes together but was wondering if there are other 'rules' for smaller caliber rifles.

Would it be worth trying some 215 grainers or would they just shoot apart more?

Thanks,
Brett

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500Nitro
.450 member


Reged: 06/01/03
Posts: 7244
Loc: Victoria, Australia
Re: Regulating medium caliber rifles. [Re: Bulletproof]
      #52985 - 22/03/06 08:02 AM


Bulletproof

Worn throats are not a major problem with DR's from what I have found.
I am more concerned if the barrels are worn in the last 1/2 or 1/4 of the barrel.

Re bullet weight, being a 303, what is it regulated for ?
174 gn or 215 gn.

If not specified you can sometimes tell by the age of the gun.

Try 174gn Bullets as 4" isn't too bad for 1st go.

500 Nitro

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400NitroExpress
.400 member


Reged: 26/11/03
Posts: 1154
Loc: Lone Star State
Re: Regulating medium caliber rifles. [Re: Bulletproof]
      #52989 - 22/03/06 08:17 AM

I assume that by "apart" you mean the barrels are shooting away from each other as opposed to crossing?
--------------------------------------------------------------------------

--------------------
"Serious rifles have two barrels, everything else just burns gunpowder."

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Bulletproof
.224 member


Reged: 10/01/05
Posts: 8
Loc: Alberta Canada
Re: Regulating medium caliber rifles. [Re: 400NitroExpress]
      #52996 - 22/03/06 08:37 AM

400,

yes that is what i mean.

The regulation is not specified but I will have to do some reasearch to age the gun.

I just thought that the worn throats might slow the bullets down enough to shoot more away from each other.

Brett

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CptCurlAdministrator
.450 member


Reged: 01/05/04
Posts: 5310
Loc: Fincastle, Botetourt County, V...
Re: Regulating medium caliber rifles. [Re: Bulletproof]
      #53006 - 22/03/06 10:22 AM

Usually a worn throat will increase velocity somewhat.

Curl

--------------------
RoscoeStephenson.com

YOUR DOUBLE RIFLE IS YOUR BEST FRIEND.



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mickey
.416 member


Reged: 05/01/03
Posts: 4647
Loc: Pend Oreille Valley, Idaho
Re: Regulating medium caliber rifles. [Re: CptCurl]
      #53034 - 22/03/06 01:38 PM

My Watson Bros 303 will only shoot the 215 grain bullets. The lighter bullets shoot about 5 inches wide and low.

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Lovu Zdar
Mick

A Man of Pleasure, Enterprise, Wit and Spirit Rare Books, Big Game Hunting, English Rifles, Fishing, Explosives, Chauvinism, Insensitivity, Public Drunkenness and Sloth, Champion of Lost and Unpopular Causes.

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Bulletproof
.224 member


Reged: 10/01/05
Posts: 8
Loc: Alberta Canada
Re: Regulating medium caliber rifles. [Re: mickey]
      #53035 - 22/03/06 01:43 PM

Thanks for that information mickey. There is a peep sight on the rifle and it did seem like it shot a little low for 50 yards.

Ill try working up some loads to see if i can regulate it and if not ill try some 215 grain bullets.

Brett

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Bulletproof
.224 member


Reged: 10/01/05
Posts: 8
Loc: Alberta Canada
Re: Regulating medium caliber rifles. [Re: CptCurl]
      #53052 - 22/03/06 05:12 PM

Curl,

I have not noticed this in my otehr rifles, is it something that double rifles usually do?

In my other rifles with worn throats I can often work up to a faster velocity because it is similar to a freebore like the weatherbys use but with factory ammunition i have found velocities to be slower normally.

Brett

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Arctic
.275 member


Reged: 01/04/04
Posts: 87
Loc: Arctic Canada
Re: Regulating medium caliber rifles. [Re: Bulletproof]
      #53054 - 22/03/06 05:36 PM

Bulletproof, this isn't the Fraser that was sold at the Bud Haynes auction by any chance? If so, it was shooting fine a while back. Where are you located? ~Arctic~

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"A stranger is a friend we haven't met!"

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CptCurlAdministrator
.450 member


Reged: 01/05/04
Posts: 5310
Loc: Fincastle, Botetourt County, V...
Re: Regulating medium caliber rifles. [Re: Bulletproof]
      #53069 - 22/03/06 10:25 PM

Bulletproof,

I don't have experience with a DR with a worn throat.

Also, you are probably right in your analysis. The worn throat will let you achieve faster velocity before pressure becomes a problem, but load for load I can't say it will render faster velocity.

My earlier comment was not well thought out. I stand corrected.

Curl

--------------------
RoscoeStephenson.com

YOUR DOUBLE RIFLE IS YOUR BEST FRIEND.



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Bulletproof
.224 member


Reged: 10/01/05
Posts: 8
Loc: Alberta Canada
Re: Regulating medium caliber rifles. [Re: Arctic]
      #53165 - 23/03/06 03:05 PM

Arctic,

yes this is the same gun. We are in Calgary.

If you have info on this gun I would greatly appreciate it.

I tried sending you a PM

Brett

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Bulletproof
.224 member


Reged: 10/01/05
Posts: 8
Loc: Alberta Canada
Re: Regulating medium caliber rifles. [Re: Bulletproof]
      #53721 - 31/03/06 10:02 AM

Well i loaded up some rounds with 180 sierras and went back to the range today.

At 42 grains Re15 the rifle grouped 2" for 5 shots at 50 yards with one flyer going high to pull the 6 shot group to 3"

I think that with more practice with the sights i could do better though bacuse the bead covered 6" at 50 yards and it was hard to get a consistent aiming point on the bull. each right-left string landed about an inch from each other though so it seems to regulate quite well.

Thanks for the help guys,
Brett

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