I am sorting through a batch of mystery large primers, getting three very distinct populations at 3 different weights Anvils in and washed:
4.10 gn
4.40 gn
4.65 gn

I pulled the anvils out of some of the 4.65 gn primers and got 3.40 for the cup and 1.25 gn for the anvil

I'm guessing the 4.10 are the LPP, and the 4.65 are the LRP

the 4.40 have a distinct anvil, flatter/wider, guessing LPP mag? Will have to compare to store bought