I love Blackhawks and 45 convertible Blackhawks in particular, so I've enjoyed this thread. Bear in mind as you shop, that the only currently available stainless 45 convertible Blackhawk is built on the same smaller frame as the New Vaquero. It is safe for loads up to and including .45 acp+P but if you desire to shoot the heavier "Ruger only" 45 Colt loads, the blued Blackhawk, built on the .44 magnum class frame with its beefier cylinder is the way to go. One exception to this, if there are still any in the marketplace, is a sizable run of 5 1/2" barrelled stainless steel Bisley 45 convertibles that were available through Lipsey's and Williams distributors. Those are all stainless steel and built on the large frame. Hope this helps you.