So, I picked up my PCR from the Gun Shop today, took it home, field stripped, cleaned, and lubricated, and reassembled it. I loaded up a -10 round mag, inserted the mag, and racked the slide and the round jammed! I pulled the slide back, ejected the stuck round which had slammed into the feed ramp, and racked another round which did the same thing. The rounds are home defense rounds/hollow points so I emptied the mag and opened a fresh box of FMJ. I loaded 2 rounds into the mag, racked the slide and they jammed too. I noticed the hollow points left some small marks on the feed ramp where they got hung up. I’m devastated don’t know if the magazines are the issue it’s something else. I suspected there may be an issue w the mags because they don’t look like factory mags nor do they have CZ or mecgar stamped on the mag. Not sure what to do at this point other than call the store and tell them what happened.