Bought a Mosin-Nagant M44 years back. A nice little shooter. Don't shoot it much. Anyway, seeing as 7.62x54R seems to be the only ammo that's cheap and in in stock around here. I took her out for a run. Shot about 3-5" group at 100 yards with irons. Got back home and started cleaning and cleaning and cleaning. "Fck is this bore every going to stop bleeding" I asked the kid. Well, piss on this. I broke out the homemade electric bore cleaner. Mixed up some solution and let it do its job for about on hour. Oh, Christ! Looking at the rod and solution after it was done you'd swear all this years I just rode it hard and put it away wet. After all was said and done its a nice shinyish bore that really lets you know she's pitted to hell.