Re: Optimal 270 WSM, 7 WSM or 300 WSM F-Class barrel specs
Get the rule book out. I have or have owned 3 F class rifles. The max weight is what you have to work on. 22 pounds My 270 AI has a 9 twist for the heaviest .277 bullets made. The barrel is 29 inches amd 8.5 pound chromoly
So 270 wsm is a wonderful choice. You will always be the underdog against the hoards of 6.5, 7 mm and 284 bases rifles
So you add up your rifle without barrel on it and order accordingly My advice would be 9 twist and about 30 inches fluted stainless. with as heavy a barrel as needed.
Heavy .277 are very low recoil just because of the shear weight and don't require an brake
.270 Ackley improved 29 inch 1.250 dia. target barrel 7mm STW 28 inch 1.250 target barrel. I also love my .458 mag for varmints and the biggest game in the world.