Ok, before I qualify with my M-40 as a duty weapon I want to make sure she's all broken in and reliable. First outing was PMC ball ammo and mixed defensive hollow points without any issues. Total round count 250. Second range trip was today. I was shooting some 6-8 year old reloads that I had from a source that I trust. Loaded one magazine with 12 rounds and all was good. Every round went off properly and the gun ejected and fed fine. Next I load 3 magazines 12 rounds each and rapid fire all 3 magazines without issues. All rounds feed and eject fine. Reload 3 magazaines and shoot first mag, no issues. On the second mag I had one problem, gun failed to return to battery fully. I eject what I figure may be a bad round and allow slide to slam home. Gun stays out of battery slightly :evil: . I retract slide and eject round , allow slide to slam home and again fails to go into battery. I push the slide foreward into battery and the trigger had not reset :?: . What's going on ? I decide to eject mag and round and my slide won't budge,WTF :x I'm getting pissed now. Finally manage to get the slide open and eject the round. Nothing appears to be out of the ordinary. I hand cycle the gun several times and dry fire several times. All seems to be normal. next I dissasemble the gun (field strip) and I notice a large streak of brass color on the chamber side of the barrel right where the ejection port is. Since everything seems to be normal at this point I reload my mags and go back to shooting. For the rest of the session the gun feeds, ejects and fires as it should. I think that a peice of errant brass may have gotten lodged between the breech and the slide causing the gun to lock up. Don't ask me how. Well 500 rounds of reloads today and with the exception of the above described problem the gun functioned flawlessly. I got groups of about 4" off hand at 25 yds. at 7 yds head shots on a shillouette were easy. At 15 yds I was placing center mass rounds within 2"-3" off hand . Another deputy I was with got to shoot my M-40 and thought the sights were "bad ass". he liked the lack of muzzle flip. His H&K .40 full size has more felt recoil and a whole lot more muzzle flip. comments are of course always welcome.