Many good solutions, some not so good, BUT FUNNY all the same. Reason I said to use a bit of spray lube/oil and go from muzzle to chamber is that I had a guy run a 12ga brush and patch into a 20ga and the brush became stuck. He pushed harder, no go. Tried to turn the rod, brush came off, now REALLY stuck. Would not re-align to put back on rod. Was close to the muzzle end. Brought it to me. I sprayed it with some Rem Oil, let it coat the barrel, brush and all for a minute. I then took a 1/2" wooden dowel rod, placed in my vise and from the muzzle end proceeded to tap/push the whole pile of stuff out. I then gave him a 20ga brush from my shelf and sent him on his way. I know that trying to push the stuff back out the muzzle end you will encounter the choke constriction and it will become tighter to remove. Just push it the chamber end where the bore diameter will be slightly larger and less constrictive. Just my own personal experience. That and with working on ML for years with guys who think that worm jags really work on any projectile that fit down the barrel before they came out with the CO2 blaster.