Originally Posted by hakenlag
Thanks Bill. I suspected they were about the same but wanted to hear someone else say it.
Pretty much across the board, substituting another brand of the same type of primer is safe. Many substitute magnum for regular as well. If I am stuck only with magnum primers, or I want to try them for a specific purpose in a load I normally would load regular, I always rework-up the load from start levels.
The most obvious exception is shotshell loading where you really want to stick to the primer brand and type specified in the receipe. Even in this case some guys substitute brands, but they usually do it only after years of experience and intimate knowledge of the various primers characteristics and the powder, wads and payload they are loading.