I certainly DON'T consider myself a "Bear Hunter", but I've hunted 'em w/friends who've had Hounds, back when that was legal.
And, much like you, at that time I carried a S&W M629 except with SIX inch barrel (I've shot 8-3/4" Mod. 27s and Mod. 29s and found that barrel length to be "awkward" both for carrying and for shooting. I've learned to like my "shooting" Revolver's to have barrels from 4" to 6" the best)
Also, I don't consider myself a "Handgun Hunter" either, although I've successfully done it before; taking Mule Deer with my 10" T-C Contender in .30 Herrett. (again I don't like LONG barrelled handguns)
My experiences going after Black Bears while carrying my .44 Mag had me limited to shots from 15'->to maybe 40' up a tree. (And I passed up several that were too small that were "right there", had one big one, also "right there" that decided to bail and come down that tree too fast to get a shot at, go right through the pack of dogs and take off never to be found again that day)
It seems to me that Spring Bears are going to be where you find 'em (and that's usually NOT up a tree).
So your range can often, and easily be 100 to 250 yd.s.
Having some experience with hunting handguns, I know that Handgun Scopes are not all that quick (or easy) to use.
IF I were setting up a handgun today for hunting within 100 yd.s, I'd put a Dot Sight on it.
But Dot Sights wouldn't be my choice for shots over 100 yd.s
Seems to me (if I get drawn for the Spring Bear Tag I applied for) I'm gonna be carrying my .270 Rifle (or maybe a .30-06).
My 629 for Bear just had its standard Iron Sights on it and at <50' that was going to work just fine.
Trouble is, I think without Hounds, Bears aren't going to offer most hunters much of a close-range target unless you're REALLY lucky.
Oh, and my choice for bullets back then wouldn't be changed today. I'd still pick the Hornady 240g XTP...think that would work just fine.