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A red-dot sight is a fine choice for a sighting system on a small-game hunting handgun, as it allows you to focus on the (often well-camouflaged and/or partially hidden) target and the aiming point at the same time. I put a low-powered pistol scope on a Buckmark a few years ago, and harvested a bunch of smaller critters with it over a couple of hunting seasons.
"Placement is power" -- seen in an article by Stephen A. Camp
(RIP, Mr. Camp; you will be remembered, and missed)