Ok. So I just finished cleaning this devil! Started out with about a minute of scrubbing with the bore brush wetted with the soap and water solution. Water turned brown quick! So, I figured I'd follow up with a cotton patch that I use in my other muzzleloaders. The gun came with a .54 calibre loading and cleaning jag, marked on it. Wet the patch, place over the muzzle then pushed in. It stayed right at the bottom. Trouble. So I put a 10/32 screw threaded all the way in and clamped a pair of vice grips on the screw and hammered the vise grips to remove the patch. I had to clamp the barrel in a vise with a leather glove wrapped around it. Back to the wet brush again for about 50-60 strokes. Tried the patch and jag again. Stuck again. Removed again. Tried another wet patch, only this time with my 50 calibre jag. Worked good. A few patches somehow came dislodged and had to resort to the worm for removal, but overall worked good. After doing this procedure over for about twenty minutes called it good. Used a heat gun to dry up good. Followed up with a couple of T/C cleaning patches and finished it off with a patch soaked in 99% alcohol.. I then looked down the bore, only to find horror. The whole bore is full of rust, and the lands and grooves are barely visible. They are there, but not what I am used to seeing. Like I said, there is pitting right from the muzzle to the breach. The muzzle rifling is almost non-existent. I thought it was weird that the bronze bore brush was literally falling to the breach by itself, and it is a 54 calibre bore brush. So, in short, the barrel is now as clean as it will get. I am still hoping that it will at least still shoot a patched round ball with somewhat accuracy. It will just be a plinker unless it proves me different. Thanks for reading this and listening to me ramble on.