I've merely dabbled in .45 Colt, only plinking loads.
The first piece of advice that comes to mind is that you will need to stick to regular .45 Colt loads and don't toy with load data that specifically states for loads in T/C, Freedom Arms or Ruger revolvers as these are heavy .45 Colt loads that will not be safe for extended use in the Rossi Circuit Judge revolving rifle.
Attention Brass rats and other reloaders: I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.