Yesterday I picked up a Taurus 809C 9m brand spankin' new out of the box. First semi auto handgun I've owned. Bought a box of PMC 115gr fmj's to go with it. Cleaned it last night. Put 30 rounds through it tonight. First shot went bang. Second shot didn't. The slide didn't return all the way. This happened almost every other round. The last 6 rounds went off without a hitch but I'm not sure what to expect next time. Could this be poor cleaning on my part before shooting, just needing a break in period, the ammo or likely mechanical? The picture is about the same position it was in when I was out shooting.