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8 or 9 twist for 7 STW using 180 Berger?

 
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  #1  
Old 07-14-2013, 02:24 PM
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8 or 9 twist for 7 STW using 180 Berger?

Going to build a left hand 7STW and wondering if I should go with a 8 or 9 twist for 180 VLD bullets? Also probably leaning to a 3 groove 27" with brake, any helpful thought based on your experience would be great.
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Old 07-14-2013, 06:32 PM
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Re: 8 or 9 twist for 7 STW using 180 Berger?

Quote:
Originally Posted by motrophyhunter View Post
Going to build a left hand 7STW and wondering if I should go with a 8 or 9 twist for 180 VLD bullets? Also probably leaning to a 3 groove 27" with brake, any helpful thought based on your experience would be great.
When I rebuild my rifle I'm going from a 10" twist 24" BBL to a 9" TWIST 26-27"; that'll be years away from now though and I'm loving the 140's going fast at present. Mudrunner and a few others are having good lock with the stw and a 9" twist and 180's. My 10" twist was on again/off again even on the 171 barnes hpbt.
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Old 07-14-2013, 06:53 PM
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Re: 8 or 9 twist for 7 STW using 180 Berger?

nine
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  #4  
Old 07-14-2013, 07:14 PM
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Re: 8 or 9 twist for 7 STW using 180 Berger?

As Lefty said, I have been having excellent luck with my factory Sendero SF 9.25" twist barrel.

My A-Bolt II 7mag has a 9.5" twist and it shoots them ok, but it prefers the 168 VLD's.

My .280 AI build will have a 1:9 twist.

I have come to realize that a 1:9 is the most universal 7mm twist for shooting 160-190 bullets. I'm sure it would stabilize 140's just fine, too.
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"I'm just a peckerwood who lives in the hills with too many guns..." - Bob Lee Swagger

"Give me a minute...I'm good. Give me an hour...I'm great. Give me 6 months...And I'm unbeatable." - Col. Hannibal Smith

Ignore everything I say, because I have a reading comprehension and memory problem...

Quote:
Originally Posted by WildRose View Post
The 284 is to the STW what a tricycle is to a Ninja.
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  #5  
Old 07-14-2013, 08:35 PM
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Re: 8 or 9 twist for 7 STW using 180 Berger?

I have a 1:8.5" in prep for the 195 VLD.

Right now, I'm shooting the 180 VLD and it does 0.227" 3 shot group at 100. Easily 1 MOA at 1000 and I'm sure better if a better shooter got behind the gun.
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  #6  
Old 07-14-2013, 09:23 PM
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Re: 8 or 9 twist for 7 STW using 180 Berger?

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Originally Posted by Archery1973 View Post
I have a 1:8.5" in prep for the 195 VLD.

Right now, I'm shooting the 180 VLD and it does 0.227" 3 shot group at 100. Easily 1 MOA at 1000 and I'm sure better if a better shooter got behind the gun.
Who are you going to have do the barrel for you?
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  #7  
Old 07-14-2013, 10:09 PM
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Re: 8 or 9 twist for 7 STW using 180 Berger?

Whoa whoa whoa! 195 VLD? When & where?

I wish they'd make a heavy-hitter 130 VLD for the .257 caliber... I've asked several times but they said working on .257 caliber bullets wasn't in the future as far as they could see...

I sure wish they would, though...
__________________
"I'm just a peckerwood who lives in the hills with too many guns..." - Bob Lee Swagger

"Give me a minute...I'm good. Give me an hour...I'm great. Give me 6 months...And I'm unbeatable." - Col. Hannibal Smith

Ignore everything I say, because I have a reading comprehension and memory problem...

Quote:
Originally Posted by WildRose View Post
The 284 is to the STW what a tricycle is to a Ninja.
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