My cousin came down yesterday to try our his new bushmaster upper and get it zeroed in and with him he brought 100 rounds of independence ammo 55 grain. He fired about 5 rounds then the next one wouldnt eject. Being a new rifle we pulled the bolt and carrier and lubed everything up wet then tried again. Next time the 3d round wouldnt eject. I stood next to him and watched through the next 20 rounds and noticed a very low report when a piece of brass wouldnt eject, some rounds just barely made it out of the ejection port. Im of the mind that this stuff is underpowered ammo as he put 20 rounds of my handloads through it and their were no hangups. Just curious if any others have had this experience with this ammo. Seems like very poor quality control.