This has been excellent info. Thanks again to all that replied.
Robert Wilson: Yes, this is a Ruger. A Super Blackhawk w/ 7-1/2" barrel. All leading is downstream of the forcing cone, w/ most leading occurring in the first 1". Sounds like firelapping is in my future if I want to continue shooting cast bullets, and I do.
I own more .44 Blackhawks (Special and Magnum) than I need to, and all of them have had significant thread choke. And all of them leaded in exactly the way you describe. But all of them have, so far, responded beautifully to firelapping. I'm at the point where I just expect to have to do it when I buy a new big-bore Ruger. Have fun!
