I have a 10mm Gp100 and it makes a fine revolver cartridge, comparable to the 357 in power. Also have a 29 and have to say the 44 Mag is likely my second favorite revolver cartridge after the 357, I have 1 44, 1 10mm and 4 357's. I have a great interest though in 327 Federal and will likely be looking for a Single Seven at some point.