Sabotloader, I guess I never throught of them in that manner. I was more concerned about a pass through hole. I have read posts of the XTP standard that hit, expand, and stay inside the body cavity. I just figured that the mag would hit, expand a little less then the standard, but hold together long enough to pass through.

Right now I am shooting the .430 300 grain XTP Hornady HP with 120 grains of Graf's & Sons 2f black powder out of my GMB Renegade. I figure it will hit hard, expand, and even if it does not pass through should release enough energy inside the body cavity to do what it needs to do. We will find out the end of this month...