I personally don't carry a sidearm when bowhunting, (only because since I am underage I don't own a hand
, however I qould recommend getting either a 6 shot .357 with a 4" barrel, (pretty much any maker will work, but I do personally like Smith & Wessons or Rugers the most), or a GLOCK in either .40S&W, .45ACP, or 10MM. Just remember that no matter which gun you get, make sure it's reliable and make sure you have good ammunition, especially if you use a semi auto firearm, since if you have a faulty primer the you will have to clear the malfunction in order to fire again and if you have a charging boar or worse a charging bear then if you need to take a second shot then if you have to clear a malfunction then you might not have time. So in that sense, a revolver is a good option, however for the weight and magazine capacity I do prefer the GLOCK. Just make sure you are good with it, and good at shooting one handed, because if you are holding your bow in one hand then you don't wanna just throw down your bow if possible. Anyways, hope this helps.