Short barrel rifle

[brandon327]

Has anyone ever built a 7mm stw with a 22" barrel ? What kind of velocity should I expect versus a longer barrel ? I am trying to build a long range lightweight mountain rifle. I am think a 22" barrel with a magnum or varmint contour and fluted with a brake.

 

[comfisherman]

Well from my extrapolated data for a 7 rum, about 47fps per inch from 26.

I don't have a 7 stw but I do have a 7 rum that's been cut down to 22, I'll let you know how it does when the scope arrives and load data commences.

 

[J E Custom]

Has anyone ever built a 7mm stw with a 22" barrel ? What kind of velocity should I expect versus a longer barrel ? I am trying to build a long range lightweight mountain rifle. I am think a 22" barrel with a magnum or varmint contour and fluted with a brake.

You will lose enough velocity that it wont be much better that a 7mm Short mag (7 WSM or 7 SAUM)

They can be built on a Mod 7 or a short action and a 23 to 24" barrel will not be any longer than the long action and a 22" barrel. also with the shorter cartridge ( 7 WSM or SAUM) it is 3/4" shorter than the 7 STW with the same length barrel so effectively you gain 3/4" inch of usable barrel bore.

So combined with the shorter action the overall length of the rifle can be very compact while using affectively a longer barrel (23 to 24").

Just a though

J E CUSTOM

 

[Slick8]

I couldn't see doing it. It would be like building a dual turbo nitrous injected big block and running street tires. It would look cool, make a lot of noise and smoke but not do any good at the track or street.

In a lightweight, I'd go with the SA rifle chambered in a WSM and 24 inches. Or my preference, a Long action in 280 AI, 24 inch tube and no break.

Good luck with it.

 

[WildRose]

Has anyone ever built a 7mm stw with a 22" barrel ? What kind of velocity should I expect versus a longer barrel ? I am trying to build a long range lightweight mountain rifle. I am think a 22" barrel with a magnum or varmint contour and fluted with a brake.

You're going to waste a tremendous amount of powder and have the muzzle blast of a black powder howitzer if you do. You'd be far better off going with a minimum of 26" with perhapa a featherweight barrel.

If you really want to shoot something with such a short barrel in a 7mm you'd be money ahead going with the .284win, 280 or 280AI, 700-08. Personally I'd go 260 Rem in such a short rig.

You are only talking about a savings of probably not over eight oz anyhos and to me it's just not worth it.