Originally Posted by rwsmith

The triplex charge enables the pressure peak to be wider instead of having just one sharp peak. The wider area can deliver power longer and still stay under the maximum peak pressure. The thing is that you and I can't do this because it takes testing equipment that we don't have to make sure these rounds stay within Sammi spec. I've heard of some of the wildcat hand loaders using a pinch of this and little bit of that, but they blew up a lot of guns, too.