I carry shot shells in the first two chambers year round here. Lots of snakes in the summer, only shoot the fanged ones, but I NEVER pass a chance to shoot a rat. With livestock feed, dog food, corn/beans planted, etc, I shoot a lot of rats. Heavier #9 shot works best for rats, lighter works better for snakes or mice...either will do in a pinch. I roll my own using shot capsules and 1/2 a starting Blue Dot powder charge for a 158 XTP.
