Thanks guys! This will ease my mind since the factory ammo has a cannellure I wasn't sure. I read something that said the 300 win mag needed a cannellure, but it was an old publication on reloading (1960's). New manuals say nothing about it so I haven't been using bullets without a cannellure. I just wanted to make sure.

Do I need to do anything special to factory brass that came with a cannellured bullet if I am using bullets without a cannellure. I just have been resizing and going with them as is. I trim them if needed.