Oh... right. That comment about "9000 yards" reminded me: bullets go really fast and the faster you go, the more drag matters.
I remember doing some simple drag problems and getting reasonably small answers (ideal non-tumbling cylinders and spheres, dropped from rest on a decent-height building), but... bullets go a lot faster than that. That's why they're useful.
Sorry for the hijack, everyone; I'm an idiot.
