Shotgun Jam issues, Suggestions

Hi All,

I have a Winchester SXP Defender. About 3.5 years old. Have only put maybe 20 or so shells through it.

Bought a 28" barrel for it. Out at the range had the first shot go bang and be a bit difficult to pump and clear the shell. Loaded another and shot just fine but would not allow me to clear no matter what I or the RSO did.
Brought it home dropped the trigger group, managed to finally get the stock and barrel off but the bolt and innards came with the barrel. Had to disassemble and finally got the shell case out after wiggling the bolt (less the firing pin and other stuff!)

Felt and looked almost like the bolt locked into the lugs of the barrel or the extractor/case lips hung on the edges.

So anyone have any ideas? Should I just send it into Winchester/Browning for service? Should I switch back to the 18.5 barrel and see? Should I try firing 50-100 more through and see if breaking it in a bit more smooths everything out?
Shoudl I just sell the thing and look for another? I got the 26" barrel so I could go pheasant hunting this fall. This shotgun is a backup for home defense have another 20 ga I prefer to the SXP now.

Will be interested in feedback and opinions as well. This was one of the first firearms I purchased before I had found this forum and knew more about firearms in general.

Thanks figured I would try it some more.

As to ammo the initial rounds were of the better HD and 00 buck to make sure it worked.
Last two were one each of Royal Rio 00 and Rio low recoil 00.
It jammed on the Low recoil but was a bit difficult to get the reg 00 out.

Yes I cleaned it well. Hadn't disassembled all the way before but cleaned the exposed bolt, face, barrel, etc... well. I gave it a good clean since I had all 20 pieces out.
Will run the cleaning brush down a few time to make really sure and go shoot it some more and see.

May just take it into the back yard as then if it jams easy to have the tool needed to take it apart and clear again!
Jim K, kind of what I had in mind. Will give it a shot.

Will try it with some better ammo as you suggest. And test with both barrels to make sure of the culprit.
Thanks for the thoughts. Will see what happens this weekend!

What does the chamber look like?

If there are obvious machine mark rings in it, you will continue to have problems even it you try to polish it with steel wool on a rod.

Click to expand...

Don't remember seeing any but I'll take another look to make sure.
Do like those honing rods. I think the barrel came from Brownell's in the first place so if necessary will take your advice and return it. More testing to follow.

Update,
So I went out to the range over the weekend. 18 barrel was flawless as usually, fired everything no problems.
Switched to the 26.fired some estate buck, Winchester aa, federal #4 buck. Worked just fine.
Switched over to the Rio low recoil buck. Fire, JAM. Had to take everything completely apart and finally got the case out. Then proceeded to feed and fire a couple of more of the federal, Winchester, and estate.

So looks like it's an issue with Rio. So solution. Just won't use the Rio for the longer barrel. Problem solved!

BTW I suspect might have something to do with the rim on the Rio. Will get my micrometer out and check before and after compared to the others. If there is anything significant I'll report back.