I picked up some 9mm 147gr XTP and 115gr General Bullets solid copper bullets for reloading a little while ago and shot them into water jugs a few days ago. They didn't hit the speeds I was expecting for the powder loads I used but it's a good place to start. The XTPs averaged 900 fps out of my Kahr CW9 and the General Bullets were running 1040 fps. They all penetrated 3 1 gallon water jugs. The XTPs had really nice expansion but I think the solid copper bullet needs another 100-150 fps to expand properly.