hi, I haven't shot this rifle a lot but I did run it in a 3-gun a while back and some ammo ran fine while some didn't. I shot it again today briefly and each of 5 rounds of ZQI had to be pogo-sticked out of the chamber. Primers looked flat but so do all primers I fire through this rifle. I then fired 5 rounds of WCC M80 and two cases had sticky extraction but came out manually. Ideas welcome. Pic attached of 3 cases: left is WCC fired through M1A, center is WCC fired through Ishy, right is ZQI/ MKE through ishy.