It depends. I often hunt with my Colt Officers Model Target, which is one of the best small game revolvers ever made.
Other than that, I will sometimes carry a Colt SAA in .357 (loaded with .38 Specials, including some shot cartridges) or a Ruger Blackhawk or Colt New Service in .45 Colt. On horseback, I often carry a Winchester Model 94 in .30-30.