While you are on the site, in your browser find and click "Add to Home Screen" A CGN beaver app icon will then be created to your phone that is directly link to the site.
Note: This feature may not be available in some browsers.
For 45 Colt I am using a hard cast 230 grain round nose bullet ( same as 45ACP) with 6.7 grains of Unique,prior to casting my own I was using the Berry's copper plated bullets available from Budget Shooter Supply:
I re-load for pistol and prefer a mild load for a reproduction 1873 SAA I ran some factory ammo and my reloads through a chronograph and the factory was 920fps and my reloads were 764fps.
Might what to try Hornady 250 gr. XPT 14.5 gr. 2400 powder. In my S+W Model 25 6" barrel gave me 6 shots in one big ragged hole at 25 yds. Might work very well in your Rossi