Please HELP! Today I bought a used Sig P220, after purchasing it and returning home, I find that when I go to rack a round in the chamber with 8 rounds in the mag, the round nose dives below the feeding ramp and mangles (rather expensive) hollow points. Anyone else share this problem? I got two factory 8 round mags with it, both do it with 8 rounds loaded. When loading the 8th round into the magazine, it feels as though the last round "snaps into place", making it particularly difficult for the slide to pick it up off of the magazine metal lips.