Recently I was given a couple .22 pistols. One was a H&R "Young American" 7 shot, the other was a H&A "XL Double action". I have read that these guns were Rimfire Black Powder. Both could be shooters, I don't want to damage either gun, they are very poor appearance, but after cleaning dry fire okay.
Woul 22 short be usable, or should I find or make 22BP.