Well talked to Ruger and yes I should have known....
"We have a special note on shooting cast lead bullets in these guns.
Lead bullets will leave lead residue so be sure to clean it out"
I've read several articles on matching the lead hardness to pressure and powder
but I can shoot the same bullets at 8 to 9 gr. of Unique and no lead in the other guns.
Shot same bullets at up to 10. 5 grain in Ruger Blackhawk and no lead in it but in Alaskan even using a .454 bullet should have expanded the extra .001 for a seal you think?
So I'll stop beating on this and just use jacketed type bullets when I shoot it.
I have a bunch of 250 gr. XTP loaded up with 20 gr. of 2400 in .45 Colt I made up for it anyway but
it would have been nice to just shoot my regular Colt lead loads thru it too.
It's still a good shooter with 3 good shots here using the .454 dia. bullets in 45 Colt.