If you can find light cast bullets [or cast your own], they can work with the right powder.mlawler wrote:Another idea if you're a reloader would be to use FMJ bullets for 32ACP loaded with appropriate powder. There are low velocity loads listed for 223 with IMR 5744 so you can probably find some for light 308s.
There may be 30 caliber loads such as M1 Carbine that may be suitable for squirrels.