14 December 2017
John, my experience with the black ash is parallel to yours--in fact, I quit using 5744 for just that reason; 20 or fewer shots, and it was as hard to drive a patch through the barrel (almost) as it was to drive out a stuck bullet.
I stumbled onto Montana eXtreme powder solvent, and, later, Montana Copper Killer. I now don't use anything else, and the borescope (lie detector) seems to confirm what the muscle requirement tells me is a progressively cleaner bore.
It does stink, and is heavily ammoniated; however, it is oil based, and you can even leave it overnight in the bore without worry; in fact, the instructions tell you to do so, under certain conditions. Which I sometimes do. (Is laziness a certified condition?)
Anyway, I am not guaranteeing anything, and I certainly am not sponsored by them in any way, shape, or form. Like many of us, I cringe at using any abrasive in a good shooting barrel; may not hurt, but I fail to see how it can help.
All I can say with certainty, is, it works for me. And that's the extent of my guarantee.
In theory, there's no difference between theory and practice. In practice, there is. My fate is not entirely in Gods hands, if I have a weapon in mine.