I guess you could say I'm a cliche, .22's and 12 gauge's at Boy Scout camp :roll: I have shot my uncle's side arm, only one. I'm really not sure if that's legal though :? According to Uncle James, on the topic of .556 to .762, the "knock down power" is really not an issue, because someone who gets shot by one of the bajillions of AR15 variants, it not going to be an issue for much longer, at least that's what he said he's seen oversees when I asked.