Has anybody had problems with Hornady ammo 5.56 or .223 (I've tried both) As soon as I got the M&P I loaded up a few hornady's in a mag to check the functionality of the gun. It chambered the round and when I tried to eject the round, in order to feed it another, it jammed. Long story short I could not eject the first round without mortaring the rifle.

This ONLY happens with hornady ammo. It runs federal and Russian **** just fine.

Has anybody had this experience or have any advice?