Bought a new SR9C last week and have about 100 rounds through it. cleaned it up and shot the first 25 rounds with no trouble. the last 75 rounds have had issues. have had a number of times (6-7 times) where a round was chambered but the slide did not come all the forward so there was no trigger. I could push it closed with the palm of my hand or eject the shell and load another and it would work fine again. when I got home I cleaned and lightly lubed the gun then ran some snap caps through it. I had the same issues when racking the slide by hand. ammo I was shooting is Lellier & Bellot FMJ 7,5 g 115grs (from Czech Repulic). Anybody had this issue ? is this a Ammo problem ? mag Problem ? gun problem ? operator error ?