Thanks guys for the info

I got a reply from Sandy and she said that the Mossbergs always had cycling problems with the longer brass shells.She also said that she can send me some with shorter brass that wont have that problem.Not sure if i'll get the same pattern with the shorter brass but i'll give it a shot and see.

BuckAlly i did try to pump rack it but it was way to hard.When i got home i took off the barrel and tried to insert the spent shells into the barrel.The Winchesters went in with no problem all the way to the brass.The Nitros had a hard time getting even before the brass.