Optimal Twists in Barrels for Different Loads

[alvinjamur]

I was reading a review of the TRG42, wherein the author
states :

"The 27 & 3/4;-inch barrel in .338 LM has a 1:12 RH twist that was specifically selected to optimize the 250-grain bullets traveling at 2,860 fps. Longer bullets such as the 300-grain Sierra MatchKing require a 1:10 twist for stability...."

I'm wondering what the connection is between twist rate of the barrel and the load. Any sort of numerical relationship?

What would be the optimal load for an AX308 with a
24" inch barrel? I'm currently running 168Gr Federal
.308 BTHP GMM.

- aLV

 

[xNF_9]

Re: Optimal Twists in Barrels for Different Loads

Stability is the key factor. Check this out. JBM Different factors change the stability in different calibers and gr bullets.