I have been casting Lyman 255 Gr, bullets, for my Ruger Black hawk 45LC. With some work I was getting respectable groups, but nothing like some of my other cast bullets in other guns.
I also cast the Lyman 225 LRN for a couple 45ACP,s. the other day I cast some of the 225s and ran them threw the seizer I use for the Black hawk.
I am using W-231 in these loads and needed to play with the load and the OAL because of the profile of these bullets, but the groups tightened right up.
I will still use the 255Gr, for hunting loads, but the 225Gr, LRN look real good on paper out of the Black hawk.