This is why I fling these ideas around here before I babble to the general public. I read someone else's post of the same idea a few seconds after I unleashed this - and *then* thought about the sabot.
Of course, it *could* have been fired from a *different* rifle into a non-deforming media, recovered, then hand-loaded in a sabot to lower velocities... Ah, screw it. I blame too much Stephen Hunter (read the frame up job in "Point of Impact").
Redman, I'd been sitting here all night, listening to my visiting ex-NYPD father-in-law talk about how perfectly fine it was for the ATF to seize anything and anyone they want to stop this guy. He's a firm believer in "civilians" not "needing" black guns. I frankly don't care if the psycho (the sniper, not f-i-l) is just amazing good with a wrist rocket, I was just trying to illustrate how investigative tunnel vision can do more harm than good.
Bah. Next time, less posting, more drinking.