Such as 300 WM. Are they used often for large situations? I'm sure They are made for large rifle standard situations. CCI isn't going to make bench rest quality primers for large ability magnum cartridges? Methow Packer mentioned: Has any individual employed these for magnum scenario software. Like 300 WM. https://tysonguhrc.tkzblog.com/31442996/federal-215-large-rifle-magnum-secrets