I have a KTG shotgun (made by Weatherby) that was purchased years ago because of the beautiful feather crotch walnut stock and that funtioned well with any loads I used. Brought it out of the bothballs this year to do some duck hunting and it only cycles 2 shells before it jambs and will not cycle the 3rd shell. The previous or 2nd shell hangs out of the action preventining the 3rd shell to go into the chamber. I am using Winchester steel 2 3/4 shells, the gun is stamped 3" . Do I have to use 3" shells for it to be able to cycle all 3 shells?? I know it's a silly question but am guessing not enough jamb to cycle properly with 2 3/4...