My Inter Arms Virginian Dragoon ( stainless) did not, very well, digest my load of 40gns Goex 3f, compressed by bullet seating, wax paper over powder, smidge of SPG between the wax paper and the 240grn semi wadcutter AOL 1.610. Loaded 5 rounds, slid in the chambers perfectly. Cocked hammer, fired. Felt like you would expect. Went to cock the hammer again and the action was jammed. hammer would barely move back. Pulled the cylinder pin and jiggled things around and the cylinder came out. I inspected all the cartridges and the fired case, everything looked good. Obviously not fouled, I loaded it again and fired with same results. Being concerned I got it unloaded and put it away. Before leaving the range I had an idea. I put one cartridge in the gun and fired it, the action turned when cocked. I inserted 3 rounds every other chamber and all three rounds fired and the action cycled perfectly. I put it away being confused as to what the problem might be. Oh I did fire 5 factory magnum loads with no problems what so ever. upon cleaning the gun, everything looks to be in perfect shape. Any ideas on what may be going on?