I know I've said it before in other posts but stay away from Bulgarian ammo. I've had some split in the chamber and others swell so bad, they refuse to let the bolt withdraw from the reciever. I've even had some in which all of the powder didn't burn. I bought 300 rounds of it for $40 and when I've shot it all up, I won't buy it again. Russian ammo is a better buy, it's more accurate and it's more reliable.
I would probably be dead if I was in combat, cause of the trouble I've had with Bulgarian ammo. It took me about 15 minutes to "kick" the bolt open the last time I fired it.
Century Arms AR-15A2, 5.56
1946 Mosin-Nagant M44, 7.62x54R
1978 YUGO SKS, 7.62x39
NEF Protector Pump, 12 gauge
Savage Model 64, .22LR
NEF Pardner Tracker II, 12 gauge
Rock Island Armory 1911A1, .45 ACP
Remington 870 'Express Magnum' 12 gauge
Bersa Thunder .380