Hello. This is probably not meaningful, but last year, while hunting javelina in far south Texas, I witnessed a friend popping a couple of javelina with the Federal 165 gr Personal Defense load. I was underwhelmed to say the least as neither "stopped" after being rolled. We never found them either so I cannot say where he hit them. It's very possible that was the trouble (poor hits), but again, all I can say is what I saw. The guy is a good shot. Best.