[5ptdeerhunter]

This past weekend I went to my friends farm to do some deer hunting. I have used my 870 for shooting trap with 2 3/4" shells. It holds five shells just fine. But when I went to load five 3" slugs for hunting I found I could only load three into the magazine tube. This limits me to only be able to hold four shells. Its not that I shoot that much at every deer, but you just never know. All of my friends use 870s and they can all fit four shells into the magazine tube, and we all use the same slugs. The only way to fit all four in the tude was if I unscrewed the cap at the end. Then the cap wouldn't fit back on.

Is there something defective with my gun, or could it be the the magazine cap. The cap is a swivel sling.