308 Gain Twist

[DocRDS]

Been kicking around a barrel for my AI (came 6.5 manban) and since I shoot a ton of 308, was looking to put a 308 barrel on it. ANything worth doing is worth overdoing so I was thinking of throwing a gain twist on it for 185 Berger Juggernaughts.

However gain twists are in short supply and for 30 cal they seem to be in the 1/8-9 range which seems very fast for 308 win and more appropriate to magnums (based on my casual knowledge). What is an appropriate gain twist for a 308 in the 175-185 gr region (I also like to shoot 178 ELD-M for Hornady and of course 175 TMK).

 

[Steel head]

Call up bartlein, I’m sure they know exactly what you’re wanting

 

[DocRDS]

You know i hate using the telephone!! Dammit so much now Frank is gonna make me cry for being a scrub shooter (I kid, I kid).

 

[the_assman]

1 in 10 twist should work good 175gr-185gr boolits

 

[DocRDS]

For future you:

Bartlein recommend a final twist of 10, with the gain being 1 or less. 11:10 or 10.5:10

 

[Steel head]

For future you:

Bartlein recommend a final twist of 10, with the gain being 1 or less. 11:10 or 10.5:10

Sounds good

 

[moosemeat]

Might as well go LF twist too.

 

[_Windrider_]

For future you:

Bartlein recommend a final twist of 10, with the gain being 1 or less. 11:10 or 10.5:10

I mostly use 3/4 gains. So a 10.75-10 would be my recommendation

 

[DocRDS]

Might as well go LF twist too.

Sry I thought that was understood.

 

[918v]

What would be the purpose of a gain twist on a 308?

 

[DocRDS]

From what I understand it helps stabilize bullets better (and larger dia bullets benefit more). And if it does nothing? Well I got a nice Bartlein barrel for my AI

Why 308? Because I have a ton of 308 components and a fantastic platform (AT-X + ZCO) to launch from. Yes 6.5 is better (already have that barrel). 6 is where the cool kids shoot (but i am loathe to add yet another set of dies, brass, etc...)

 

[moosemeat]

Gain twist does what it does regardless of what caliber and cartridge is selected.