Petzal apparently believes (as many people do) that weight retention is the ONLY factor in bullet penetration, and it isn't. Frontal area of the mushroom is at least as important, and perhaps more so. This can easily be demonstrated by shooting various bullets of the same weight, diameter and muzzle velocity into the same media. But there are plenty of hunters who never get beyond a belief in sheer weight retention.
Yes, I understand what he says. But my point is that in general, the bullets that penetrate the most are the ones that retain more of their weight. For example, the partition is designed to retain around 65% of its weight, the A-Frame around 85 or more%, the FS and TSX around 100%, and so on.
Also, that every article I read about bullet penetration versus brand or type the A-Frame is always talked about out-penetrating the partition, and the reason why is one of the top bullets for hunting in Africa.
