I personally have a 4 5/8ths Ruger SBH and have several friends that do as well with some scoped even, yet others have 5.5" models as both seem to carry much easier than the longer 7.5" barreled models. Now of course this is just my opinion, as you have to be the desider of what is right for you and you alone.
Then most importantly practice at
your known shooting distance for handgun hunting. Are you going to be taking shots out to 25, 50, 75 or even 100 yards? My normal area I will be shooting where I get shots as close as 5 yards and no greater than 30 yards in the dark woods which is about what I was doing bowhunting, so that is what I practice at.
Then get yourself some archery animal targets like these or the other poster types such as the black bear posing sideways or whitetail deer posing sideways. These targets have the vitals outlined with a faint line for heart lung and kidney areas.
Martin Archery Targets with the Deer, Bear and Ram.
Martin Archery Small Game Targets for the Large Target Pack or Small Target Pack.
I only use these types of targets to practice
ALL my hunting with as I am staying focal for what I am hunting.