Here's what RH VanDenburg had to say in Handloader 288...
38 spl - 150 gr. bullet - 5.0 gr. TS - 847 fps
44-40 Winchester - 200 gr. " - 7.5 gr. TS - 793 "
44 Russian - 250 gr. " - 4.5 gr. TS - 751 "
45 Colt - 250 gr. " - 8.3 gr. TS - 842 "
45-70 - 300 gr. " - 16.0 gr. TS -1295 "
400 gr. " - 15.0 gr. TS - 1119 "
When I first bought Tin Star, I guessed at a load for .45 Colt, and shot 7.3 gr. TS with 200 gr. RNFP bullets out of my 5 1/2" Pietta SAA's, giving me 640 fps. This was a very pleasant load to shoot, and shot to the revolver's sights at 25 yards.
I loaded 8.5 gr. and a 250 gr. RNFP in my Colt Lightning (Pedersoli) giving me 1033 fps and almost no blowback, and shoots to the sights at Cowboy distances.
I much prefer Tin Star to Trail Boss for shooting and reloading qualities. Shoots cleaner, too, IIRC.