The 45 Bisley uses a standard Blackhawk frame with Bisley parts. The frame says Blackhawk and the cylinder has the Bisley rollmark on it. I bought mine in 2002, but I think they are still like that.
I figured since the OP was discussing Bisleys I answered with a "New Model" era answer.
Of course, the guns made prior to the advent of the Super Blackhawk were Blackhawks. Both types were made simultaneously between late '59 and late '62/early '63. At that time the .44 mag. Blackhawk was dropped but was resurrected in '06 with the 50th Anniv. guns.
I have a New model blackhawk Bisley 45LC 5.5".
I assume the 7.5" Bisley model has the same frame.
Does the 44mag 7.5" Bisley have the same frame with just a different
stamp on it?
I'm a little confused here.
Ruger makes 3 frame sizes. "Small" Single-Six, "Mid Sized" Blackhawk and "Large Sized" Blackhawk/Super Blackhawk.
Bisley Models have, in the past, a slightly different frame, however that difference is only in the "height" of the portion where the grip frame's "ears" attach. I believe things are getting more "standardized" in this day and age.
I don't follow all the various versions of the products and won't attempt to "set in stone" the specifics of the variety of the products.
Peruse the SR&Co's web site. Study the relationship between the catalog numbers and the "size" of the products offered. You should be able to discern the various sizes and their nomenclature. Maybe. :roll: