I took it to the gun shop and the gunsmith said he isn't sure what it is but no matter what size the ammo or brand the ammo is a Benelli should fire and eject without a hitch. HE even ran dummy rounds through it and it still was sticking. Maybe 3 out of 10 will eject. I will keep you guys posted. As long as Dick's pays for it I am happy. I just can't wait to get it back to pratice for duck season!!!