The .17HM2 is the "grail" of squirrel cartridges if you ask me....
it is the bomb-diggity.
i think back to the times as a kid when i hunted a big, open pecan orchard behind my grandparents house where i could see squirrels at a hundred yards...and they could see me.
not that it wasnt fun banging away at them with an old iron sighted 22, but i was more of a nuisance than a threat.
if i'd had a scoped mach2 back then, squirrels might be extinct in that area.