Methow Packer
Well-Known Member
Guys wondering about the use of high BC bullets when you don't have a recommended fast twist barrel. According to the twist calculator a 270 cal 170 grain hybrid needs a 8" twist to stabilize properly. Using a 10" barrel the BC is compromised by 6%. Question is does this mean your accuracy is compromised 6%? Could I use this bullet at more moderate ranges and still achieve regular accuracy. Maybe 600-800 yards. The BC would be 318 instead of 338. The adjusted marginal sg is 1.3