I fell in love with PB Blaster at least 20 years ago when I first saw it melt a styrofoam cup. Its unstuck rust welded nuts and bolts better than anything. Its a part of my cleaning ritual, after the hot soapy water plunger routine, I blow high pressure air in every nook and cranny, then blast down the barrel. I then give the nipple hole a good shot of PB Blaster and let it run down the inside of the barrel, giving it a shot of air from oustide the nipple hole. I then take the barrel over and stick the air nozzle in the barrel, seal the barrel off with a shop rag and blast the PB Blaster out the barrel via the nipple hole, cleaning off the excess with air pressure. Then I run a dry patch down the barrel and finish with the cleaning of the nipple and return to the basement where I pull that dry patch which has the residue of PB Blaster on it and often a few streaks of dark substance. I run another dry patch and follow it up with couple of Ballistol saturated patches, wipe down the barrel with those patches and reassemble the rifle. When at the range next time I will run a dry patch down the barrel, snap a cap, flip the patch over and run it down again, load the rifle and shoot the first "fouler" of the day. Oddly enough the first "fouler" is a 10X with the rest of the day spent chasing it around the target.
