Shotgun help

[270Flat]

My Remington 1100 only partially ejects the low brass shells (2 3/4") I am target shooting with. I first thought it might be a compression issue. Put in a new seal ring, but still the same result...

My season ended well last year, killing a limit of ducks with out issue. Cleaned it up and put it away until this last target shoot.

Suggestions?

[Huntbear]

Gas port holes are partially plugged up with crud... would be my first guess.  Will heavier shells run through it fine? 

[quadrafire]

I would break it down and cleand the piston rings and the tube they slide. That is an area that could get kind of sticky 

[270Flat]

I was shooting 3" steel to end my season last year. I will try something like that today. I will also clean the slide to rings. Thanks!!