I just purchased (200) rounds of 7.62x54R, Prvi Partizan brass this morning from "Gunstop Reloading Supplies, Inc.". Their phone number is 1-800-645-7644.
Having ordered this morning the brass would be shipped same day. It don't get much better than that. The price is higher than Graf at $54.00 per (100) but $9.00 bucks more per (100) is better than no brass at all and this beats buying the Prvi loaded ammo, shooting it to recover the brass.