Tula ammo is known for inducing malfunctions. It's cheap and now you know why. It's not because your gun is "finicky". It's junk ammo. If the ammo is out of spec or uses primers that are too soft it will jam any gun. All of that said, there may be a burr inside the firing pin hole. Feel around with a needle file and see if it catches on the edges. Widening the hole is not going to help and will start causing problems with other types of ammo.
Last edited by drail; December 8, 2011 at 03:47 PM.