Short Barrel 264 Win Mag Advice

[Wild Monkey]

I was brainstorming while reading through a previous thread and thinking Short Barrel Rifle. 14"- 18" with a Brake. Primarily shooting lighter 120's & up all Copper hunters. What Twist would be best as well?

 

[MagMan]

If you're shooting all copper I wouldn't hesitate to go 7.5 possibly 7.

 

[amu_shooter]

+1 on the 7 twist using all copper, exactly what I run outta my .264 WM with the CE 140 Lazers, they come apart great when you hit bone, devastating.

I know you said 14-18 in barrel, don't think I go under 18.

 

[WeiserBucks]

14" will need a stamp unless the brake is pinned and welded, just a heads up.

 

[ARlife4me]

I know it's a choice, but why so short?

 

[MallardAddict]

14-15.9 inches will need an sbr tax stamp unless you add a brake to get over 16" and is going to have one hell of a muzzle blast

 

[ARlife4me]

14-15.9 inches will need an sbr tax stamp unless you add a brake to get over 16" and is going to have one hell of a muzzle blast

new meaning to mag dump

 

[Dmagna]

I don't think you will out perform a non magnum with such a short barrel. There is too much powder in the 264 win to burn in such a short barrel. I don't know how the powder burn would be, could have very inconsistent SD/ES.

 

[hankle]

You must like to eat gas? If not, you better find a taste for it... You might make eat so much gas with this one that your eyes water!

LOL, I had a little fun with this one.

On a serious note, My 10.5" 223 is pretty gasy and will burn your eyes. My 7mm mag with a 24" barrel (that I'm pushing hard) has unburnt gas that is detectable.

Best of luck!
HW

 

[ARlife4me]

maybe 296 is the answer...............................

 

[7.62 Gunner]

I don't think you will out perform a non magnum with such a short barrel. There is too much powder in the 264 win to burn in such a short barrel. I don't know how the powder burn would be, could have very inconsistent SD/ES.

That's a misconception, nearly all the powder burns in the first 3-6" of barrel, gas expansion is what creates higher velocity.
There's no impact on SD etc. And short barrels can be exceptionally accurate.
I have two magnums with 16" and 18" barrels that I run suppressed, you'd be amazed how well they perform.
I'd hate to shoot them braked though!

 

[7.62 Gunner]

I was brainstorming while reading through a previous thread and thinking Short Barrel Rifle. 14"- 18" with a Brake. Primarily shooting lighter 120's & up all Copper hunters. What Twist would be best as well?

I'm getting 2900 with 140 bergers with my 16" 6.5 saum suppressed.
@Ernie has a ton of experience shooting big magnum rifle cartridges in xp100 pistols with brakes.

 

[Mike D Texas]

You would be better off with a 6.5 SAUM with a barrel that short.

And yes run a 7.5 twist at minimum.

My 21" 6.5 SAUM Improved runs 129 grain Terminal Ascent bullets at 3250fps with H1000.

 

[Ernie]

I was brainstorming while reading through a previous thread and thinking Short Barrel Rifle. 14"- 18" with a Brake. Primarily shooting lighter 120's & up all Copper hunters. What Twist would be best as well?

Choose the same twist as if it would be longer barrel.
18" 26 Nosler with 147's
Since yours is a rifle, I would save some money and gov stuff, and run a 16.25" barrel at minimum.
What is the minimum impact velocity for the bullets you will use, and what game at what max distances do you have in mind?