I used a lot of it.. was one of my favorite powders, before you can never find it on a shelf anymore...
All I've ever done is run a bore snake down the barrel after I'm done shooting or hunting...
Most of that has been in Stainless barreled factory Rugers Mk2, in a variety of calibers...
never had an issue and those barrels are high milers, but still accurate so never had the need to replace them ...
look down the barrel with a bore scope and they look just fine..
A gun smith friend or acquaintences have told me, that they think most barrels they get to replace were worn out by overcleaning them.
Four of them local to the area... Chick Donnelly, Kevin Wyatt, Bob West, and Mike Bellm.... three of those guys trained under P.O. Ackley..
Kevin Wyatt, he was trained by the US Marine Corps.
I follow there experiences...and advise.
