Ya know, I always liked the concept of same ammo too. And I ran a Marlin 1894/S&W 686 that way for several years, first with 125 JHP. Then later with midrange lead SWC matched to a Ruger B-hawk.
But what I found was that I rarely carried both, and even more rarely shot the combo with the 125 JHP. Too much flash and blast in the Smith to be enjoyable. The the light fast hollow point in the carbine was not really a suitable load for deer, my most common quarry. Later, t I shot the B-hawk and the carbine at paper and plinking with the mid range loads, but I never hunted the carbine as it was pretty milk toast in power.
To get from one "power band" to another required pretty major sight adjustment. I did find that 148 WC/.38's and the 125 JHP shot to same point of aim, but the WC did not feed in the carbine, and single loaded it was still pretty mild as a utility load. And I wanted a bit more punch in the hangun too.
Eventually I had enough .357's guns on hand to accomplish what ever task. The B-hawk still shoots mid range lead. The 125 JHP SD ammo goes in a M28. The carbine is set up for 158 JHP and serves as a deer/hog rifle.