I have a 26" Cowboy 1895 with Ballard rifling. I find the Microgroove to be very good with jacketed bullets, the gun I posted with its target is Microgroove.
I'm doing additional load development with the CB gun, shooting different cast as well as jacketed bullets.
Another matter, I had some Speer cowboy type 405 gr. coated bullets loaded with 4198. After a number of years, those rounds wouldn't fire. I pulled one and found a lot of corrosion, such that the powder was ruined and the primer was dead. They were all duds. I dumped the whole lot. Same load, 405 Lasercast, all fired, no corrosion. I'm thinking the coating that Speer put on those bullets reacted with the powder to make a mess. I don't see those bullets listed, maybe they quit making them. I sure don't want any more. Anyone have a similar experience?
DF
