It is common to carry a gun in the field in case you run across a snake. Some chose a shotgun, while others carry their trusty .22 LR rifles. There are many new guns that are easily carried on the hip that are perfect snake slayers. Derringers made by Bond Arms and the Taurus Judge are two of those handguns. The author explores their reasons for believing the .45 Long Colt and .410 Bore are the perfect calibers for killing snakes.