just saw other post regarding the hades hollow point pellets from JSB. these are frangible pellets, now i can see these working great with soft targets-bird body shots as well as squirrel and chipmunk and rat etc. what concerns me is head shots on squirrels with these. looks like it could end up fragmenting on impact against very tough squirrel skull. as well as other- raccoon, possum and so forth. are my concerns justified?