I was shooting my Impact yesterday I had just reloaded the mag. and on the seventh shot the charging handle wouldn't close! I haven't shot this gun all that much, but it's been solid so far, well I wondered what kind of nightmare this was going to be, after decocking and checking the probe and screw I went inside and pulled the barrel, it didn't take long to figure out the problem, I had loaded a pellet backwards in the mag! I tapped.it out with a cleaning rod and checked the breach oring, reinstalled the barrel, just lost some shooting time! Instead of wondering "what happened to the gun" I should have thought "what have I done now", I can still say I haven't had any issues with my five FX's!