I got a call back from one of the major primer manufacturer's technical guys today. For that I am grateful, but not for his attitude. It was repugnant at best, down right rude and obnoxious at worst. For those reasons I won't post the company he was from.

Suffice it to say, they have had the last of my business in the primer department!

It seems our litigious society prevents folks from being personable too.

OK, what was said was that he wasn't about to give any "paper" information to me because it would end up on the web with his name tied to it with a supposed approval of the process of substituting rifle for pistol primers and such like.

Basically, all of our assumptions are correct with only one exception, material hardness. Material is all the same, at least in his company, but the thickness changes according to prospective use. Brisance and expected pressure are the main reason for the differences, at least according to him.

FWIW