Stick with the .357. The combo is just more money, really for little return. Let your wife shoot .38's. The BH is superbly accurate in .357, and .38's. A Ruger Blackhawk, in .357, 6" barrel, was my first centerfire handgun, in 1969. I quickly found that Rem. 158 gr. HP, was what it liked. I made shots that even I was surprised at. I took a rabbit at a measured 80yrds, second shot, but the first made him duck his head. I would say, don't waste your money on the combo, it's already a combo with .38's.