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6BR twist rates?

 
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  #1  
Old 07-20-2012, 03:38 PM
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6BR twist rates?

Just some quick questions and input from the 6br crowd. I'm going to re-barrel my 22-250 in a 6br and was curious if anyone has any experience running lighter bullets 75-85 gns in an 8 twist barrel. I'm in the process of ordering a kreiger 1 inch bull at least 28 inches most likely w/an 8 twist and am on the fence between a 9 or 8 twist.

Is that 8 too fast of a twist to choke out the lighter weight bullets in that 75-85 gn range?

Obviously the 8 twist is for running the 105-108s but Id like to have the right balance to run a lighter varmint style bullet without hamstringing velocity too much as well. I want to run the lighter varmint rounds for varmint use and then have the ability to run the 95+ gners for the windy days

Thanks.
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Old 07-20-2012, 04:00 PM
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Re: 6BR twist rates?

Quote:
Originally Posted by Hunter2678 View Post
Is that 8 too fast of a twist to choke out the lighter weight bullets in that 75-85 gn range?
My 8 twist, 28" Kreiger tube in 6br shoots 87 gr V-max 's into bug holes.

Jeff
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Old 07-20-2012, 04:07 PM
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Re: 6BR twist rates?

Quote:
Originally Posted by Broz View Post
My 8 twist, 28" Kreiger tube in 6br shoots 87 gr V-max 's into bug holes.

Jeff

Velocity range?...Varget? 4895?
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Old 07-20-2012, 08:08 PM
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Re: 6BR twist rates?

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Originally Posted by Hunter2678 View Post
Velocity range?...Varget? 4895?
Varget, and can't remember the velocity as I setteled on the 107 SMK's for their better BC. The 107's are at 2773 fps and are awesome way out there. Taken small deer, anteope and yotes to 650 yds. Wife shot 5 into 4" at 1000 yards.

Jeff
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Old 07-21-2012, 07:57 AM
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Re: 6BR twist rates?

Over a dozen of the guys I shoot with have 6BR's, I have a 6AR. They are hard core bench rest shooters and any group larger than a bughole is cause for wrist cutting. All of the have 1:8 twist and shoot the light bullets as well as the 107's. Both light and heavy bullets win matches. Just about all use Krieger barrels, Lapua brass, CCI Match primers, Vitavouri powder, most, but not all use Bergers..I personally use an AR with a Whitely 6mmAR that is a necked down 6.5 Grendle. 1:8 twist and shoots 87-107's into .25". I'm partial to 107's for the same reason Broz is.
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Old 07-21-2012, 09:04 AM
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Re: 6BR twist rates?

I use an 8tw with 95vld for groundhogs. I think you'd be good to go in 8tw.
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  #7  
Old 07-21-2012, 09:04 AM
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Re: 6BR twist rates?

good info, thats what I was hoping to hear...thanks Broz/Grey
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