Handloads at 3150 fps. But most of those shots were long; figure impact velocities of 2300-2600 fps. I was initially worried that they wouldn't expand at lower velocities. That was definitely not the case!

They're deadly killers. The Mid-Asian Ibex i shot was at 400 meters. The bullet hit and he tipped straight over. When we gutted him out, there was no exit wound but the chest cavity was completely scrambled. The heart and lungs were completely destroyed. All I found were a few bits of copper in the mush.