If you have military cases with a primer crimp , you may want to get a primer pocket swaging tool. A lot of manufactures make them, I use an RCBS one , comes with both small and large swaging capabilities.I use it on all types of mil spec brass.

Depends on what your rifling in the bbl. is , as to what bullet & charge and powder, primer etc.. I see Mag. primers used on some reloading data to get max loads.