So i have slowly collected several thousand rounds of PMC XTAC .62 grn green tip over the years and i now find myself asking what to do with it. I cant shoot it at any local ranges, i cant hunt with it, not sure of its performance in a defensive manner so not sure if its suitable for a SHTF situation. What do you guys think about it. Should i just use it for plinking or keep it for the end of the world.