I'd like to extend my range a little from my current hunting handgun, which is a 44mag. I'm looking for recommendations on a single shot handgun to reach 150-175 yds accurately, and have sufficient energy left to harvest deer with a shorter barrel, using FACTORY loaded ammo. . I'm leaning toward a TC Encore, but don't know where to begin on caliber selection. What rifle cartridge wont lose too much from the short barrel? Are there any that tend to be inherently more accurate from a short barrel platform? Thanks in advance for any suggestions, as to caliber, or platform to build from.