Super reduced power/gallery 10mm loads for small game?
Long time rifle reloader, first time handgun reloader. I am looking to make some sort of super reduced power 10mm load for grouse and snowshoe hare.
I know it's a silly and less than ideal pursuit, but I always have a 10mm on me and there are many days when it's not practical to carry a 22lr as well. Underwood 200 grain hardcast doesn't damage a lot of meat but I'm bad about putting in earpro and rawdogging a half dozen of those loads after finding a covey of ptarmigan is starting to take a toll on my dumb ears.
It only has to be better than a slingshot, doesn't have to cycle the slide, and I'm open to whatever weird projectile would work best. I'd just carry those loads in a separate magazine.
Does anyone have any ideas for a starting point here?