I'm having a problem with finding the right load for my 45 colt Ruger Blackhawk. I was having a problem with accuracy and leading. I just got my cylinder back from Doug Guy ( who did a wonderful job of cleaning up the chamber and reaming the cylinder to the correct size) and decided to go try a few rounds through it. I fired 18 shots, six with 7.0 gr, six with 7.8 gr, six with 8.0 gr of Universal powder with a CCI 300 primer and a 255RF from my Lee mold. Velocity was 856, 920, and 975 respectively.
The problem that I'm confused about is that it's leading terribly. I'm using 45-45-10 lube but I added more mineral spirits and sprayed it on with two coats. The cylinders are no longer leading but there is lead around the forcing cone and a little in the barrel. There's also lead across the top strap. This is what really has me stumped. The forcing cone and barrel appears slick as glass. I'm thinking that it is being caused by something strange happening with the powder burn on the base of the bullet. My experience is very very limited in the use of cast but I didn't notice this with the loads of Titegroup.
I'm not sure why but my can(new) of Hodgdon Universal doesn't mention Clay technology like all the others that I have seen. Not sure what that's about. Anyway, thanks for any insight that you might have.