Hello, After 300 rounds (3 times @ range) I have to say WOW! This gun is a pleasure to shoot, simple to break down and clean. I used Magtech for the 1st 200 rds and then Winchester for the last 100 rds I only had 1 problem thus far I had a round (Winchester) chamber but not fire I pulled the trigger and nothing so I ejected that round and the rest fired without a hitch would you say this was a bad round I put it off to the side and loaded it in the next magazine and it fired I cleaned the gun after each range session per the manufacturers instuctions, maybe it was operator error. What would you guys recommend for some good indoor range target shooting ammo? Thanks for your advice and expertise in advance.