My only dealings with one, I sighted one in for a guy once - he threw me
two boxes of shells and said shoot it all I want.
It was neat, but I sort of question the ballistics of it, bullet so light -
I just can't see what it does better than (or in some cases, as good as) a .22
If I needed more than a .22, think I'd look at a .223 instead of
one of the "magnum" rimfires, but that's just me.
When those things first came out around here, I heard all sorts of outlandish
stories, even talk of shooting deer with them. I ain't buying into anything
with a 25 grain bullet