I've got some of those in .357 magnum and .40 S&W caliber..I like the concept
As important as was the great John M. Browning in small arms development a century ago, so too has been Tom Burczynski over the past 35 years, but in the contentious arena of innovative projectile designs.
Browning worked with the full metal jacket (FMJ) design, and that's pretty much where things stood 'til Lee Jurras came along with the high-velocity jacketed hollowpoint (JHP) rounds he began marketing under his SuperVel brand in the 1960s. Lighter weight than the FMJs, these JHPs were a quantum leap forward from the fanciful type of round described in the purple prose of pulp novels exemplified by Mickey Spillane whose revenge-minded protagonist "Mike Hammer" would sometimes take a pocket knife and cut Xs in the nose of his .45 ACP FMJs so that they would "make a small hole going in and an exit wound you could drive your fist in coming out."
Then Tom Burczynski arrived, and anti-personnel handgun cartridges have never been the same!
First came the Hydra-Shok of the early '70s which proved so effective a round that Federal Cartridge Corporation licensed the design from Burczynski in the mid-'80s and immediately gained parity with mighty Winchester and Remington as a major American munitions manufacturer. This was followed in 1991 by the "machine-in-a-bullet," the Starfire hollowpoint marketed (poorly and with much hyperbole) by PMC/Eldorado. Then came the radically different (for Burczynski) Quik-Shok concept in rimfire, shotgun slug and handgun versons, the latter of which was licensed to start-up Triton Cartridge in 1996.