My intent wasnt to suggest you are over loading. Rahter, because a Pmag can typically take 31 rnds to give it slack to prevent this kind of malfunction, if it happened with a properly loaded 30rnd pmag, then there could be something rotten in denmark.

To wit, if it were a mag impedance problem, a pmag should at least have improved it. More over, mag impedance doesn't explain the round getting stuck, while a downloaded magazine works fine.

If you come by, bring the mags, so i can see if the carrier or bolt is marking them anywhere.