Well depending on where you live and what sorts of critters you might need to shoot I would recommend either a .357 or .44 magnum. If you decide to go with a .357 I would recommend a 66 or 686. For woods and atv carry I would recommend at least a 4in barrel. The 66 comes with either a 2.75 or 4.25in barrel. There are a ton 686 models. I would think a 5 or 6in barrel of some bend of 686 would be good. If you go with a .44 I would highly recommend the model 69. It’s light and handy and would be a dream to shoot with .44 specials and you can shoot magnums if you need to. If you desire a beefier frame there are a ton of 629 and 29 models. I personally like the ejector shroud models as opposed to the full underlug models. A 4in or 6in barrel length would be good. I like 6in myself.