I'm a newbie here, but been shootin' for nearly 50 years. Just took my MSR-10 6.5 Creedmoor out to the back forty to zero the scope, and was dismayed to find eight of ten rounds fail to eject. Have had at least six other ARs (still have three of them), and never had this problem. Only ammo I have is Hornady Whitetail 129-gr soft point. Will try another brand and see.