I know this isn't really a handgun topic, but I recently purchased a few hundred rounds of Fiocchi .223 ammo loaded with Hornady 40 grain red tipped V-Max bullets to 3600 fps. I wanted something which might be an explosive stopper on a home invader yet probably not go through much else. In other words, not over penetrate. I went to the range last weekend and tried it with my CQB AR-15 on watermelons, a pumpkin, soda cans and two liter pop bottles. Talking about having fun. They literally exploded most all my fun targets. There were bits and pieces of bullet embedded in the pumpkin. Most impressive. Not much penetration and probably useless against body armor, but I wouldn't want to be on the receiving end of it. It's probably happened but I've not heard of a home invader wearing body armor unless it was a Swat Team member and that's a different story altogether.