I just got my Ruger SS Bisley 5½" .45 Colt/.45 ACP convertible Saturday. My .45 Colt cylinder looks like it has burnished chambers. Very nice. The .45 ACP chambers are not as nicely finished but are ok.
The .45 Colt cylinder throats are pretty close to being correct in size. However, the .45 ACP cylinder is so undersize it is laughable (so, why am I not laughing :x ).
I can't even get my reloads in the cylinder (the bullet shoulder extends just a bit from the case and will not enter the throat). It'll allow me to load factory loads but I am not going to shoot any - this is going to be a "cast gun", only, for me.
I will shoot the .45 Colt and see how it works but the .45 ACP cylinder will have to wait until I ream the cylinder throats (I will have access to a reamer in a week or so).
At any rate, after a bit of work, I am really looking forward to using this revolver with BOTH cylinders.
Dale53