Thank you, Tiro! I was trying to remember that ammo brand name, and I was drawing a blank. Of course, I didn't know if it was purely an export product or was sold locally in Brazil, and it's about as hot as a half-chewed habenero, but it goes bang.
If God didn't want us to own guns, why did He make the 1911?
sasops, I don't have much personal experience with CBC (magtech) ammo in this caliber (I've tried many other calibers and were OK), but I think it is just as reliable as any other mil-spec 45 ammo. CBC is the only brazilian ammo maker, and they supply their armed forces and police. Their normal load is a 230 FMJ at 830fps.
Don't buy old ammo in the black market, as long as the boxes are new and you inspect a few rounds for irregularities, crimp, etc. you'll be OK. In any case, if you go into any large gunshop in Sao Paulo or Rio (or any other large city) you'll probably be able to find other american or euro brands that you have more experience with.