RE: PRIMER QUESTION
i dont buy into the " its to powerful/Its to hot" therory. Ive never had anything like that happen and the accuracy was amazing. What i think it is, Put a little scare into the inline shooters and sell them a package of primers that costs $3-4 more than the regulars and claim they solve all these "problems".. I belive i've shot over 400 of the federal and cci shotgun primers and they were excellent performing primers that offered me less blowback.
To answer your question, Yes, You can use them.