Re: Reloading Military Brass
Yes, your Rockchucker will be enough to decap crimped-in primers, but I would recommend that you get a separate decapping die from one of the die manufacturers. Yeah, it's an additional piece, but they are typically built sturdier than the decapper built into the standard reloading die. The good news is that one dedicated decap-only will work for most cartrige cases. They are not caliber-specific.
You will need to remove the remaining crimp material around the circumference of the primer pocket hole prior to any attempt to seat a new primer. Compare your decapped mil stuff to a decapped civilian case and you should be able to see the difference.
Several manufacturers offer crimp removal tools, RCBS being one of them - avoid this one at all cost !!! it is a real PITA to use. ANY of the others have got to be easier to use, but instead of trying them, I just quit using mil stuff with crimpped primers. Someone else may have some recommmendations, sorry, but I don't.
Paul