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Max Online: 16728 @ 03/25/12 08:51 AM
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#6322302 - 06/04/16 07:59 AM 5.56 Ammo for SBR
onlysmith&wesson Offline
Bird Dog

Registered: 07/10/14
Posts: 261
Loc: Lewisville/ Foard County
Haven't shot anything but 55gr. through my SBR. Not bad, but would like to know if I'd be improving accuracy if I went up in bullet weight. Barrel is 9", six grooves 1/10 twist. Anybody shooting through this barrel?

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#6324088 - 06/05/16 06:08 PM Re: 5.56 Ammo for SBR [Re: onlysmith&wesson]
jdk1985 Online   content
THF Celebrity

Registered: 08/15/11
Posts: 11776
Loc: Waco, TX
1/10 twist is pretty slow. Generally speaking, you will not be able to increase bullet size very much and retain stability. You could maybe get to 60 or 65.

It usually takes 1:7 - 1:9 to stabilize the 75+grain bullets.

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#6324271 - 06/05/16 08:53 PM Re: 5.56 Ammo for SBR [Re: onlysmith&wesson]
onlysmith&wesson Offline
Bird Dog

Registered: 07/10/14
Posts: 261
Loc: Lewisville/ Foard County
Thanks for the info. Gun shoots way better than I expected, just wanted to know heaviest bullet I could shoot. I can stay with the 55gr V-max.

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