Here's a great article on this and other "special" ammunition:
http://bayourenaissanceman.blogspot.com/2014/01/bling-bullets-dont-believe-hype.html.
FUQ:
Yet another crop of supposedly high-tech, über-deadly bullets is appearing on the market, claiming to offer revolutionary results (usually at extraordinarily high prices). They include:
The 'Multiple Impact Bullet', claiming to open out into a multi-projectile buzz-saw after firing, to ensure a hit (stupidly, ridiculously over-the-top marketing video here);
The 'G2 Research R.I.P.' round, with a technically baffling description that appears to be all smoke and mirrors and very little intelligible science (marketing video here);
Yet another ultra-light-weight, ultra-high-velocity round, 'Liberty Civil Defense' ammunition, that produces visually spectacular effects in target material. (See their YouTube channel for lots of videos, if you want to.)
