The barrel is enough if you can handle it. Short barreled , powerful revolvers recoil more and are a little more difficult to handle than longer barreled ones. The shorter sight radius makes it a little more difficult to be as accurate as the longer barrel big boomers. You should try one before you decide.
Looking at getting a 629 or SBH in a 4" configuration. This would be primarily a carry gun for outdoor activities but also deer during north ga deer season. Sub 50 yard shots maximum!
Is 4" enough barrel?
Absolutely! As Doc Rogers mentions, the short sight radius is what trips people up, over a longer barreled revolver. That said, there is no inherent accuracy difference going to a shorter barrel (once you get used to the shorter sight radius) from a longer one.
It's plenty. My Mundenized 629MG delivers 2" groups at 50yds with my standard plinking/practice/woods bummin' load. Never chronographed it but out of my 4 5/8" Ruger the 250gr Keith gets to 1300fps, same for the 310gr Oregon Trail, the 330gr Beartooth to 1226fps and the 355gr Beartooth to 1130fps. These bullets don't need a lot of velocity to work.