North American Arms Rule 1 22WMR

I've never shot any .22 mags out of a barrel shorter than 4" and then never anything with a body larger than a porcupine. The CCI Gold Dots had picture perfect expansion on porcupines out of the Kel Tec PMR30. Those that got stopped were just under the skin on the off side and they looked just like the ones in the advertisements. The ones that hit bone were mangled but held together. Out of a rifle they are pretty explosive and I only found bits of them, penetration was way less than from the PMR. I've heard good things about the Federal "Punch" load but not shot them myself.