.25 synthetic marauder jammed

Did you try shooting them out? That's what I do if I get a double load. Unscrew the shroud and remove it, then cock the gun without a mag then close the bolt and shoot. It helps if the gun is fully charged to 3000 psi. I have never had that not work. If there are too many and that doesn't work then take the bolt out and push them out from the rear with a cleaning rod or similar.
 
Mine jammed and I had to push the pellets out entering the barrel from the muzzle end. I just tapped lightly over and over with the plastic end of the cleaning rod. It was necessary to remove the shroud. I thought they were not going to come out, but after a few minutes of light work they popped out.

When you finish check your baffles. I shot a double pellet and damaged all seven.

If all else fails call Crosman,

Good luck
 
This is one of those things we usually only do once. Removing the shroud and even the barrel would be a good place to start,I would use a wooden dowel and gently try and tap them out.In the past with really bad jams I have removed barrels and heated them with a torch that obviously can soften the lead and make easier to push through.Then clean barrel and re-install.Dont torch barrel with it still on the gun FYI.lol hope you get the issue solved.
 
"Benniosity"my marauders barrel is jammed with pellets and there is no way of getting them out any help?
Try some barrel oil. A few drops through the muzzle and the other side to help lubricate the pellets. This will help loosen them up and will make it easier to tap them out using the rod. Be gentle so there is no damage to the barrel. 
 
"ztirffritz"I'd imagine it would be prudent to also degas the rifle before working on this. I'd think that tapping a ramrod into the barrel has the tiniest of remote chances of accidentally causing something to slip and possibly discharge. It would be a shame for that to be the moment when the pellets are freed and put a hole in your ceiling or your face.
Absolutely!!