I have the same problem with my M1 this year. I have used this gun for 4 years and have always used Remington Nitro Steel #2,#4, and BB in 3 inch. and untill opening day this year I had no problems. BUt this year I bought some Remington nitor steel High Velocity and the 2nd or 3rd shell would not eject. I grabbed some left overs fromt he season before and they would n't work either. I had a few Kent Steel left over from late last season when I couldn't find any remingtons. They worked great. We came in from the morning hunt and I cleaned the gun really good and went out for the afternoon and the same result. Luckily my buddy had an extra box of Kent Steel which again worked great. The following weekend I bought some Federal Steel and cleaned the gun really, really good and had the same result. So does anybody have any clues to why remington all of a sudden won't work in my gun. Oh and the left over shells from last year, half of them I couldn't even load into the gun, were in an un-opened box that was left in my water proof ammo box in my basement.