I just posted something on the "SuperVel"" 38cal rounds that we fired once in training. I found a short article about this ammo & figured I'd post it. (the SuperVel practicaly took our hands off when we fired it!):
New Federal Expanding Full Metal Jacket
By Shep Kelly
In 1973 when I entered law enforcement, the newest, most controversial, bullet was Lee Jurras' SuperVel hollow and soft points for the .38SPL/357MAG, 9mm, .380 and .45 ACP. Lighter in weight than standard bullet weights, and at a much higher velocity, the theory behind the SuperVel said that increased expansion from the higher velocity translated into tissue destruction, which produced better incapacitation with less danger of excessive penetration. And for the next 27 years, virtually every bullet from every manufacturer was a variation on the same theme--hollowpoints were THE law enforcement bullet designs. The ammunition industry, at the urging of the law enforcement community, made bigger, smaller, soft/hollow, higher velocity, subsonic, plated, unplated, serrated jacket hollowpoints. Now familiar names such as Gold Dot, Hydra Shok, Silvertip, Black Talon, XTP, Tactical, Golden Sabre and so on, emerged from the marketing departments of the ammunition manufacturers, big and small. And each of these designs was heralded as an improvement over what had come before, and in many cases, were.
Full article here: http://www.ammoman.com/40_EP_DESC.htm