If you can pick up some magtec ammo try there 95gr fmj ammo. They do run well in mine. Winchester white box is one brand I will not use. Seem many people have problems with there white box ammo. I only have 50 rounds fired so far but all ran 100%. Also get an old inner tube for a mountain bike. Bike shop give old tubes away. Cut atleast on piece for the grip to aid control. I use 3 pieces, 1/4", 3/4" and full lenght cut to fit. Really does help to keep a tight controled grip. Some times even a second seasoned shooter can help. Good luck.