I've chronied (and disassembled) bullets from several lots of it. I've only found two types so far (both have about a 123 to 125 grain bullet in it). Some has ball powder in it, and it was hotter -- up around 2440FPS (I wasn't sure of origin/date of this stuff, but by description above, it was probably the 1990-something manufacture). The other stuff (from an old-ish crate of Czech) has some kind of fairly fine stick powder in it, and it's not so hot -- down around 2360FPS.
Both flavours were remarkably consistent for velocity (IMHO) for "cheap junky military ammo".