As always, a dual purpose piece MUST be a compromise - - -
- - - What makes a great hunting revolver is somewhat different from a great Concealed Carry piece.
(Imagine that!)
I very much like my 625-whatever Mountain Gun, due to the combination of portability, decent concealability, and power.
As to the S&W action not accepting heavy loads, you might want to do a TFL Search using "Heavy .45 Colt Loads," "Hunting loads for .45 Colt," and, if you have some time to read, simply ".45 Colt." You can trim down responses somewhat by limiting your searches to Handloading & Reloading and The Hunt forums (fora??)
Don't have the link available, but one you'll find is one to Sixguns.com and sixgunner.org boards. There's at least one article by John Linebaugh. VERY worthwhile reading.
No way a concealable .45 C will equal the pure hunting capabilities of, say, a ten-inch barrelled, scope-sighted Contender in .35 Remington. Sorry--You just can't. OTOH, for close range use and targets of opportunity, a 250--275 gr. SWC bullet at around 900 fps will kill any white tail deer that walks, and wouldn't be a bad load for much other game.
Another caveat - - - As a long-time cop and Texas CHL instructor, I've seen any number of guys who say they're going to get an expensive shoulder holster so they can pack their BIG OL' handgun concealed. I mean, six-inch N-Frame Smiths and long-tube Redhawks, not to mention the .44 and .50 Desert Eagles LOOK good in movies, and SOUND good in coffee klatch discussions. Actually wearing one beneath normal street clothing is another matter, even if you reside where the weather is mostly cool. So, some of 'em spend big bux in order to have a few weeks of heat rash and neck aches, before they make other arrangements. Big difference in a comfortable hunting shoulder rig and one which is fitted closely enough to really HIDE a big handgun.
A full scale 1911 (39 oz plus ammo) is about as large as most people can handle on a daily basis. Yeah, I know a couple of guys who go the "Dirty Harry" route with six-inch S&Ws. I also note they doff the rig at every opportunity. An alloy .38 snub sure beats NO gun.
Just a grumpy old man's two cents worth.
Best,
Johnny