Since ammo is expensive, I have been target shooting with my Mauser every day (I try to shoot everyday, but I usually shoot with a .22). Today, I had my first FTF in the 250+ rounds I have fired through it. I have had some hang-fires (about half a second), before. I have read on other forums, about old yugo ammo exploding, but I shoot surplus Egyptian and Belgian ammo. Anyone have any problems?