Until now centerfire ammunition performance has been based on the IMR series of powders developed in the 1930’s and 1940’s. It is now possible to achieve 100 – 200 fps higher performance ammunition than standard without paying the price of excessive recoil or finicky accuracy. The heart of Superformance ammunition is revolutionary new 21st Century powders which achieve unprecedented performance and efficiency in small arms. Superformance produces levels of performance that previously could only be achieved by mechanically compacting large amounts of powder in the cartridge case (Light Magnum, High Energy).
I use H4895, its a bit more stable at colder temps for my .308win in my SA M1A. The only really new powder I have adopted is Longshot for when I load 185gr Barnes Tactical M/LE in the .45auto, its a duplicate load of the Corbon DPX.