I like the foaming cleaners myself. Let it soak for 15min and then work it until it is clean. Kroil is a good one for Cylinders too. You are having the same issue that people have after shooting 22 shorts in their revolvers or rifles, after awhile they can not chamber the LR ammo anymore until a good bit of scrubbing.
CPL holder since 1991, NRA Lifetime Member, DU Member, NICET certified
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