22bra build

[Matt_3479]

Well I’ve narrowed down everything for my build expect the barrel. My goal for this rifle is a hunting and target rifle. Not competition just something fun to shoot with coyote hunting in mind as well. It’s going be lighter weight. The issue I’m having is deciding between a 1:8 or 1:7 twist barrel. I’m planning on shooting 75’s so I know the 1:8 will work. Any recommendation between the two. Bore is .218

 

[spife7980]

7

Why 218 over 219?

 

[Matt_3479]

7

Why 218 over 219?

It’s what’s available. I figured since I’m not pushing bullets with massive powder at crazy high speeds it won’t make much of a difference.

 

[moosemeat]

Cause the 22brx is a slow round? 22 br can push the same weight bullets as 22-250 to 95% of the speed. What's the BRX do?
I honestly don't think the 219 would be a problem. 1 in 8 limits you to 77 vlds or maybe 80 grain sierras. I would honestly go 1-7. Just in case I wanted to play with the heavier bullets.

 

[4O6shootist]

Id go 219 bore as well. I run a short barrel 22cm with 219 bore 7tw. Have had mid weight bullets over 3300, no failures. I'm building a 22br for prs practice rig, its same 219 7tw.

 

[Kentucreed6]

I have been shooting a 22BRA for over a year now, I'd go with the 7 twist also. I shoot the berger and 85.5 and 90 A tips at 3000+ FPS. I also have a .219 bore and will also stick with it when it's time for a new one since I know it works. I don't believe you'd have any problems running an twist with your stated bullets. I ran a lot of 80 elds in an twist 223ai at 3000 fps with no problems as well, but above that I'd stick with the 7. I'm going to be getting a proof CF cut in 22BRA also for hunting, it'll be 20" in 7 twist. It's a great cartridge

 

[kthomas]

Going tight bore is inviting problems and doesn't really provide any advantages.