well I don't know all the technical specs and numbers on the slug. What I do know is it blows a serious hole in the animal. I was turned onto them 2 seasons ago and have been using them ever since. I've killed 4 deer and 16 yotes with them (20 total). Of the 20 animals I've killed with them, I havent' had any of them run more than 10 yards!! No lie. They drop in their tracks and that's all I need to see.
Seems to me that they have phenominal penetration and power and deadly accurate for me. Again there may be studies against what I'm telling you I just don't know the logistics of them. Be honest with ya I've never needed a reason to research it. A friend of mine told me to try these at the range one day. Did some target practice and was amazed how accurate it was for a slug. Took it to the field and the first deer I shot at with them was a nice 8 pointer at 50 yards. He flipped over backwards and didn't get up. I'd be interested to see the comparisons to other slugs too.