I don't have much to say on this topic, but it's been rattling around in my brain for a while. The central question is: "What makes a good powder a good powder for a given rifle/cartridge?" QuikLOAD gives us some insight, but not an answer. We can see muzzle pressure, the percentage of powder burned, and when that happens, the resulting muzzle velocity. But not the most important part- which one is going to shoot the best. So what does the mob think? Is there a way to intelligently select a powder other than "use what everyone else uses" or "just randomly test them"? How would you go about choosing a powder if you couldn't ask your friends and *why*?