If you're going to handgun hunt then leave the rifle home & make it happen with your 629. You've already said you can get under 100 yds & thats a makeable shot with your handgun. I wouldn't use a hollowpoint, I'd go for a hardcast slug or a heavy duty jacketed. One such bullet is the 270 gr Speer Gold Dot, even better is one of the 300 gr slugs with a thick jacket or one of Belt Mountains Punch bullets.
I took my bull moose at 45 yds with a Ruger SRH 480 & a 370 gr softnose cast slug, I got complete penetration & the bull was down in 20-30 yds. The following year my friend took his bull moose with a Ruger 41 magnum & a 230 gr softnose cast, shot was about 65 yds, one shot as the bull faced us, he was down in 10 seconds.
You might not get the classic broadside shot but an angled shot is deadly if your bullet is up to the task. I've only taken one moose but I've taken a lot of elk with a sixgun, I'd say elk are tougher to put down, just my thoughts. Good luck!
Dick