although I agree with most of the posters here that t is a poor choice for an SD bullet. But the OP is correct on one thing, and it does create a significant role for these types of rounds, in it's ability to pierce body armor. although I don't carry this round specifically, I do keep a couple hyper velocity 9mm at the bottom of my mag(2 out of 16 in the very bottom, the rest are appropriate mid-weight high velocity hollow-points) just in case some nut-job is wearing BA, I have a chance of the last two rounds in my mag putting a hole in him. I can't see ny reasonable situation that I am going to need to empty an entire mag in an SD scenario so I do not mind having a couple at the bottom for a "Hollywood" type situation. obviously not gong to defeat armor plates or anything, but Kevlar is very little protection again small and ultra-fast rounds, despite their lack of penetration on soft tissue. but, overall a poor choice for SD even though the first few inches are seemingly incredibly devastating in a gel test, you need to understand why a gel bloc test is set up the way it is, and why such deep penetration is desirable even though most people aren't that thick before hitting vital organs. a gel block is not a person, a gel block has no skin, a gel block has no bones and no extremities to block a COM hit. I highly suggest anyone that feels like these hyper velocity rounds, or gimmicky rounds like RIP, are a good SD bullet to watch shootingthebull410's videos. he does an excellent job of explaining why a gel test is what it is and why the penetration minimums are what they are. and trust but verify, after learning what you can from him, do your own research and you'll see why these are the exact opposite you want in and SD round unless your primary concern is over-penetration, but even then, these types of rounds will still blow through walls with ease because the violent reaction comes from the impact with liquid or "semi-liquids".
https://www.youtube.com/watch?v=k5219Q_XpSI
https://www.youtube.com/watch?v=T_hZMZM1l04
if you watch this 9mm ammo quest you will learn a ton of info about wound ballistics
https://www.youtube.com/watch?v=iA7FTjmLiQQ&list=PLgNSGOEQko_M90AMdRCDMgd-w4Yozc27i
anyways, I am not a hater at all. I love the boutique rounds that are at least trying these things, and it may well lead us into the future of ammunition one day, just not quite yet. but I will still keep a couple at the I the bottom of my mag for the one scenario where these bullets actually do out perform others.
https://www.youtube.com/watch?v=k5219Q_XpSI
https://www.youtube.com/watch?v=T_hZMZM1l04
if you watch this 9mm ammo quest you will learn a ton of info about wound ballistics
https://www.youtube.com/watch?v=iA7FTjmLiQQ&list=PLgNSGOEQko_M90AMdRCDMgd-w4Yozc27i
anyways, I am not a hater at all. I love the boutique rounds that are at least trying these things, and it may well lead us into the future of ammunition one day, just not quite yet. but I will still keep a couple at the I the bottom of my mag for the one scenario where these bullets actually do out perform others.