This may seem a strange suggestion but it has cured similar problems in three different older double for me. A dirty chamber will make opening the breech very difficult. Try some good solvent, a chamber brush and then cut some Scotchbrite green pad to form a chamber fitting wrap on your cleaning rod. Wet the scotchbrite with some solvent and work the chamber over thoroughly. Cut new pieces and repeat the process before wiping well. None of the chambers I had appeared dirty but they were. I think that over time the plastic hulls make deposits until eventually the chamber plastic and hulls form an adhesive bond when fired. If this isn't the problem it cost you nothing to try it. The Scotchbrite will not harm the barrel - a tip I was given by a well known custom barrel maker for the muzzle loading builders.

Last edited by Jerry V Lape; 01/07/14 12:31 PM.