I have acquired a 44-40 Win 92 with a bore so fouled you couldn't see the rifling hardly .I alternated using Kroil overnight along with an oversized copper brush and about 75 patches soaked in Outers Nitro Solvent Bore Cleaner.Used about 3/4 of the bottle and dry patches to swab.Can now see some lands and grooves.Any ideas other than second verse same as the first! Harold


















































