I use liquid Barrel Blaster in a spray bottle on the inside/outside of my lock and
foaming Barrel Blaster in my flinter's bore, filling the barrel and letting the foam run out the flash-hole Once the foam fills the flash-channel and runs out the flash-hole, I then plug the flash-hole with a toothpick and let the rifle sit in an up-right position for an hour or three, giving the barrel another short "shot" of foaming Barrel Blaster in a hour or so.
Then... using a nylon bore brush, I scrub out the barrel thoroughly. Once that's done, I tip the rifle's muzzle into the plastic garbage bag filled kitchen trash can and let all the debris and liquid run out into the plastic bag lined trash can.
Then I crank up my small, twin-tanked portable air-compressor (max. = 100 lbs pressure) and let the air pressure build up until the compressor shuts off and I blow out any remaining liquid & debris into the trash bag by putting a nicely-fitting nozzle extension into the flash-hole thus cleaning out not only the flash-channel, but the barrel as well.
Then I run a clean patch or two up and down in the barrel to totally dry it out and insure it's completely clean. If I'm gonna shoot the rifle again within a week or less (which is usually the case since I'm retired), I spray a little WD40 down the barrel and run a clean patch up and down in the barrel several times to insure the bore has a thin coat of WD40 all over it. I also spray a little WD40 into the flash-hole to insure the flash-channel is coated.
If there's a possibility that I may not shoot the rifle for a while (usually this only happens when I put the rifle away in the Winter until Spring arrives), I skip the WD40 action and use Ballistol instead... insuring I give the bore and inside/outside of the steel parts (lock, etc.) a decent coat of Ballistol.
To be reasonably sure I won't have a "puddle" of liquid (either WD40 or Ballistol) in the flash-channel or at the bottom of the barrel, I crank up the ol' air compressor just before going to the range to shoot and put 100 lbs of air-pressure into the flash-hole, through the flash-channel and out the barrel (which is aimed down into the trash can's plastic trash bag)... and blow out any remaining oil or WD40 leaving a relatively "dry" flash-channel and bore.
Then, at the Club's rifle range, I load about 20 grains of FFFg with
NO rifle ball, add a measure of FFFFg to the frizzen pan and light off the "clearing load" to insure everything is dry and "ready-to-load" before getting down to some serious shooting.
This "cycle" works for me with a minimum of fuss and time expended... it sounds like more "work" than it actually is. It involves very little of my time, but I'll be the first to admit that foaming Barrel Blaster is considerably more expensive than soap & water.

Strength & Honor...
Ron T.