Gunsmithing what barrel twist for 20" creedmoor

[Blasst]

I have been looking at various manufacturers 6.5 creedmoor barrels and they mostly go with and 8 or 8.5.( Krieger, Rock, etc.)

Lmt has one now with a 9 twist.....but doesn't state the length.

slight oversight I guess.

Does a 9 twist favor a slightly heavier bullet and an 8 lighter bullet? or do I have it backwards.

I'm actually planning on ordering from Krieger and will talk to them about it but was just curious after seeing the LMT today.

Thanks guys,
Jim

 

[Niles Coyote]

Re: what barrel twist for 20" creedmoor

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Blasst</div><div class="ubbcode-body">Does a 9 twist favor a slightly heavier bullet and an 8 lighter bullet? or do I have it backwards.</div></div>

Faster twist = longer (and heavier) bullets, slower twist = shorter and lighter weights.

I use a 8.4 twist and dont see any reason to go faster. I am shooting 130, 139, 140 and 142 match bullets and VLD's

 

[wadebrown]

Re: what barrel twist for 20" creedmoor

I use 1-8" twist rate for all of my 6.5's and I shoot 130-142g bullets depending on the case. I have seen any number of 6.5's using 1-8.5" twists and doing well so there are options.

Someday I may try 1-8.5" barrels.

wade

 

[Rthur]

Re: what barrel twist for 20" creedmoor

I would say 1-8 would work for sure. The slightly short barrel length at 20" will cost some velocity. Velocity x twist = what you can stabilize. IMO

 

[Sportin Wood]

Re: what barrel twist for 20" creedmoor

1:8. What bullet are you shooting?

 

[wnroscoe]

Re: what barrel twist for 20" creedmoor

1-8 or 1-8.5 = same/same