I purchased a new barrel for my 1973 manufactured 1100, 12ga. The new barrel refuses to eject the spent shell. I returned the barrel to Remington and they sent me another barrel and the same result. It cycles fine with the 3 other barrels I have. It seems to fit a little loose. I have measured the gas chamber on the new barrel and it seems to be .01 larger in diameter and the gas ports seem to be on the flat of the chamber instead of the milled shoulder of the chamber. Any ideas what I can do to make it work? I have considered sending it in to Remington but a new factory replacement should work on all model.

Seems to me if a shell is NOT ejecting...the extractor may be the cause.

Have you cleaned all the assembly/packing lube out of the bore, and especially the chamber ?
EXACTLY what is it doing ?

When you fire a round the bolt recoils back but only about half way open and the shell does not eject, not traveling far enough back. The bore is clean and the gun fires and ejects shells with the old barrels I have. The new barrel is a 26" factory barrel from Remington. Gun has new old stock gas piston and seal as well as a new gas seal. The barrel seems to be a little loose fitting and the gas cylinder measures about .01" larger diameter inside than the original barrel from 1973. I am disassembling and cleaning and lubricating everything this evening and will reassemble and test it.

I found a small knick on the top of the Action bar and honed it down. Cleaned and lubed everything and reassembled. Test fire and walla, it works. I think that the slop in the new barrel's gas chamber was enough to keep it from cycling properly. .01" makes a big difference in available pressure it seems and the knick added enough friction to stop normal cycling. I read "Virginian's" other posts and thought that cleaning and inspection was in order.

Thanks, Wayne in Virginia

Good job getting it running. Make sure you keep the gaps on the piston and piston seal at 180 degrees and that old style set up should compensate for any slight dimensional differences.