Range Report 7mm 8.4 twist

[Rthur]

Has anyone tried this twist rate on the medium weight bullets say the berger 168vld? Building a hunting rifle and probably don't need a fast twist barrel for these bullets.


thanks R

 

[George63]

Re: 7mm 8.4 twist

from the litz book - the 168 vld may/ may not be stable in a 9 twist - so the 8.4 is a safe bet

 

[turbo54]

Re: 7mm 8.4 twist

168s were stable in my 9 twist.

162s are lasers from an 8.4 twist obie I put together for a friend.

 

[Rthur]

Re: 7mm 8.4 twist

Good deal, think we'll go with this twist. If we go heavier the extra twist could be a good thing.

 

[sharpshooterbr]

Re: 7mm 8.4 twist

The 8.4 twist should work well with the new Berger 195gr EOL bullet whenever they release it, if you ever choose to go with a heavier bullet.

 

[excaliber]

Re: 7mm 8.4 twist

9 twist for bullets up to 180gr. The 8.4 is for 195`s.

 

[Garvey]

Re: 7mm 8.4 twist

I worked up a load for a bud's Thompson with a Bullberry 9 twist. It stabilized 175 SMKs (foulers) enough to print a 1/2" 100 yard group. It loved the 168 VLDs at 2970 fps.

I have a 1:8.4" Rock that will get 180 Bergers.