I have a problem that has perplexed me for the last three years concerning the Ruger Mark IV Target .22 LR pistol I shoot for Steel Challenge competition and just ringing steel for fun. In cleaning this gun over the last three years, I have yet to come out with a clean patch at the end of my cleaning sessions.
It’s important to remember that shooting is fun; and this is just the pistol to remind us of that fact.
The .22LR G44 mimics the size of the Glock G19, but it's more than just a substitute for it's 9mm cousin.
While a thorough cleaning should be enough to eliminate stubborn rimfire brass from failing to eject from a .22 LR Colt Diamondback, soaking the chambers with a penetrating lubricant like Kano Kroil should remove any leftover firing residue and restore positive extraction.