Hey Yankee
how's that shell library working for you in MD? YOU pay millions, and yet it still hasn't HELPED solve ONE SINGLE CRIME
besides the silly laws you live under, in a free state a pointless, easily BROKEN (as in worn out or easily PRONE TO DAMAGE)
and remember 100% reliability, as the owner under these schemes is liable if the shell isn't stamped. How do you get past the variety of materials in primer composition, the different density, composition and malleability, consider that a coin stamp press has a VERY specific life, and is replaced, yet what, it would be a mess, would you end up registering firing pins, and it
STILL FAILS to regulate violence
see violence is the issue, not guns, next you will have to register your kitchen knives and turn in your glass beer steins (and yeah, that's real)