I have the same revolver only with the 8 3/8" barrel, a Ruger Single-Six (4 5/8" barrel) and a Marlin 1894. I use either Honady's XTP (85 or 100 grain) and some 95 grain cast GC. All of these guns are VERY accurate with the loads they like (I use the 1894 for cowboy silhouette - pistol cartridge).
Not much not to like - low recoil, accurate, and economical (use 4 grains of powder or less for almost all of my loads)
Nice find and you WILL enjoy it!!
PennDog
