i've got a "full auto" bb gun, the most it will shoot is in 8 round bursts but that's still good enough. everyone loves shooting that thing.
a couple years ago at the range, some guy had a bolt action carbine (forgot what brand) in .375H&H. he asked if i wanted to shoot it, i didn't, but figured what the hell. talk about rattling teeth, i don't know if i hit the target since it took a few seconds to bring the muzzle back down. why someone would put that round through a 16 or 18 inch barrel is beyond me