I'm planning on doing a rebarrel soon to 300 PRC. I'm planning to build around the 199gr Hammer Hunter bullet but will likely also shoot 215 Bergers and what not. My question is this; how much does twist rate effect barrel erosion? Would I see a notable difference in going with a 1:8.5" over a 1:8"? I don't want to do a 1:9" because that is too close to the minimum threshold and I want to make sure there will be plenty of stability. I know barrels are a consumable but I would like to get as much life as possible. Thanks in advance