That's not to say that A-Frames are inferior in any way, but their superior weight retention doesn't necessarily translate into greater penetration.
Right. Expanded Frontal diameter makes a huge difference. The A-Frames have a larger frontal than a Partition that blew it's tip off. That's one of the reasons the TSX's have such a great reputation as a penetrator, especially if they blow petals off.
I've yet to see an eTip blow the petals off. In fact, the one that I recovered from a Zebra completely smashed through a shoulder and looks picture perfect.
I really wish I had some bullet recoveries from that Eland. Sad to say, it just wasn't on the list of things the trackers in Africa were after at the time.