Having problems with my 410. It has started jamming on me. It ejects fine and gets the next shell to the chamber but the end of the shell catches near the hole. I am using brand new AA 2 1/2 inch shells.Here is where I think I am going nuts.....I have shot LOTS of these shells through this gun shooting skeet with no problems at all other than an occasional rubber o ring. It does say on the barrel to shoot 3 inch only but like I said I have shot 2 1/2's in it forever. I have cleaned it very good.....new o ring and made sure the hole in the barrel was open which it was. Any ideas or did I just get lucky it shot the "Cheap" 
shells as long as it did???? Hopefully....thanks in advance, Doug
shells as long as it did???? Hopefully....thanks in advance, Doug