From what I can gather 13 or so grains of h110 is a suitable for moderate 357 load behind 158 xtp. Don’t quote me on the exact number I don’t have the data in front of me. I’ve found info of this being perfectly suitable and other saying it’s absolutely not. Anyone here tried this combo or have some insight? It’s no big deal to get a different powder but I picked up a bunch for loading 460 smith in an encore and would like to try it out. Ruger gp100 so I’m not “too” concerned about blowing it up I know these guns will take a beating and be fine. I don’t want anything dangerous and of course will work up to the best combo but I’m worried about starting off too low that’s where I’ve read you have issues.