My dad has alzheimers and is no long er safe to use firearms. He was a pretty serious horder and i’m trying to go through all the weird stuff he has accumulated and figure out what I can use it for. He has about 400 rounds of new norma 22ppc brass, i’m not really sure what to do with it (he never owned or had a rifle chambered in it to my knowledge). Can i reform it to 6.5 or 6 grendel or Something similar or should I try to sell it off. 22ppc seems to be pretty unpopular these days.