Promo is produced by Alliant & loads to Red Dot data weight for weight. The Ruger is a 1976 Liberty model in 45 Colt. I purchased a 45 ACP cylinder & fitted to this sixgun.
Well they aren't from quite as far as yours was, but I bet I could dial it in pretty quick.
These are two 10 shot groups from 10yds with the HG version of that bullet.
My load uses 4.0grs of Bullseye. I have a SS Colt 1911 Govt, that is a pleasure to run these through.
I have been considering getting one of the Ruger NM 45 ACP/Colt BH's with the convertible cylinder just haven't gone through with it yet. Watching that didn't help either....