I had a 15" MGM Encore barrel with Vias type break. It was full bull and I loved to shoot it. The only round I ever loaded was the Barnes XPB 200 grn HP all copper and used H110. It has a nice push on the recoil and was very accurate.
The 200 grain XPB will kill anything in the lower 48 with out a problem. I took a cow Elk with it, several whitetail and a couple of 150+ lb hogs. I started with a Bushnell 2x6 and it went south on my after about 100 rounds. I put a UltraDot
Match Dot with multiple dot size option. I shot mostly on 2 MOA dot in the woods here in OK but on anything over 50 yards I would change to 4 MOA dot. It has never had a hiccup since installing it.
Good luck with your revolver. I sold the 460 Encore barrel to get a revolver to see if I would like it.
Mike

You don't quit playing because you get old, You get old because you quit playing.