+1 (actually + several) for classic cleaning rod/boreguide -- and the technique of letting the solvent
have the time to do its job before trying to scrub things out.
Yes, I own and occasionally use bore snakes from 22 - 45 caliber on my rifles. But I know that the result
(while much better than nothing) is only a 75% job that still requires a preservative wet patch of
CLP/WeaponShield down the bore w/ a Dewey/Otis cable that I carry in the field along w/ the snake.
Putting that initial dry patch down the bore w/ a rod before firing next weekend at the range is
very revealing.