I realize that this is an older post, but I want to be clear.
I am having a rifle put together in 270 wsm, I just received 100 lot of brass that I was going to start working with. From what I have read I should anneal and neck turn before firing any, correct?
IMO maybe not.
1. What kind of neck variance are you seeing to start with? Most of the time factory or non tight neck chamber, very little to be gained as long as brass is reasonably close in variance.
2. do you have proper tools to anneal? templaq and some type of annealing system that is proven. If not forget it. Just as liable to mess up the brass as to provide any benefit.
3. are you using neck bushing dies? If not forget neck turning.