Question about aggressive barrel cleaning, what to use...
I've got an M1 carbine that I don't believe has been cleaned since it was made! I've spent more than 5 hours scrubbing that barrel with 4 different solvents and worn out 4 phospor/bronze brushes and the patches are still coming out BLACK! Any suggestions as to what might work better at clearing the crud out of that barrel? I've tried Hoppes, Hoppes copper remover, Quick scrub and another foaming cleaner. Or do I just have to keep working on it til my arm falls off?