I added my first AR-10 (Armalite .308) to my collection at a gun show about a week ago. I've been using some PMC ammo I picked up at the show as well and have been having ejection issues.
After inspecting the bolt, I noticed the extractor had a little damage to the 'claw' and I bought a new on from cheaper than dirt and replaced it. Had it at the range this morning and am still having the ejection issues. It fails about 2/3 of the time.
My next project will be to replace the ejector.
Any other things you guys can think of?