New Winchester AutoComp Smokless Powder

Winchester has designed a ball powder specifically for race guns. Winchester claims an optimal burning rate, with a higher volume of gas, for more effective compensator function. They say it allows smaller charge weights for cheaper reloading, but usually that runs counter to gas volume and compensator function.

The factory load data doesn't have any 9mm Major loads, although the minimum OALs are shorter than is usually used for 9mm Major.

Did some poking around. It seems that AutoComp burns too fast to work for 9mm Major. Also, it won't be available until after the SHOT show, at least.