8 or 9 twist for 7 STW using 180 Berger?

[motrophyhunter]

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.

 

[Lefty7mmstw]

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.

 

[Len Backus]

nine

 

[MudRunner2005]

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.

 

[Archery1973]

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.

 

[motrophyhunter]

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?

 

[MudRunner2005]

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...

 

[Archery1973]

Whoa whoa whoa! 195 VLD? When & where?

http://www.longrangehunting.com/for...e-7mm-195-gr-eol-hybrid-hunting-bullet-85792/

Who are you going to have do the barrel for you?

McWhorters built the gun for me.

 

[7stw]

nine

What he said, NINE!

 

[gamehawker]

What he said, NINE!

And what my buddy said, NINE! gun)