So I just bought this brand new SA Loaded in 45 ACP and I'm having some jamming problems. It fails to feed (round doesnt fully leave the magazine and hangs up the slide) about once every ten rounds, sometimes more frequently. All ammo is PCM 230gr FMJ, about 300 rounds so far, no change. Weapon has been cleaned and lubed as per the manual (military CLP used) and no change. Three different magazines have been used with the same results (two of the magazines work well but they ALWAYS jam on the 7th round, if you only load 6 it shoots them just the same, 1 jam in 10 or so). I thought it was just because the gun is new, but it doesnt seem to be going away. What do you think?