Unless you plan to only practice a little, or are well healed in the money department, practicing with what you carry may not make sense, and isn’t really necessary in many cases.
Years ago many police departments would train and qualify using mid-range .38 wad-cutters, usually loaded with a very light charge of powder to save money. Then they’d switch to something much hotter - including Plus-P - when they went back on duty. Because of the difference in recoil and point-of-aim vs. impact this wasn’t a good idea. Too many officers were able to qualify with the light loads that couldn’t hit the side of a barn with what they carried on duty.
However it doesn’t have to be this way. If one’s practice ammunition is an approximate equal of what they carry that’s good enough and far less expensive.
In this instance the first thing that should be done it to determined what load hits closest to the point-of-aim. (Do remember that an S&W model 10 has fixed sights.) Experience tells me it will probably (but not necessarily) be a standard load with a 158-grain bullet.
Hopefully PawDaddy will find what he’s looking for - a standard load that he’s comfortable using for serious carry. If not, he will find the recoil and difference between bullet impact points to be negligible between a Plus-P load and a standard one using a slug of similar weight, largely because he is using a steel, K-frame revolver rather then one of the smaller ultra-lightweights.
In any case there is no reason to buy expensive commercial “carry†ammunition to practice with. A paper target, gong, plate or whatever will never know the difference between a lead round-nose or SWC going 800FPS vs. a similar hollow-point Plus-P going 900FPS.
But your pocketbook will ……
I know. I’ve been doing this for around a half-century.