Dan, that Sneezer is interesting but has very little in common with heavy bullets in the 9mm. You aren't dealing with the same case capacity limitations, mag length restrictions, or feeding issues, it's not even a semi-auto. I'm not sure how it applies here?
Some of the powders you mention will work in heavy 9mm subs, but others are too bulky. I haven't bothered to try Red Dot, for example, because of it's bulk.
Last edited by Yondering; 11/22/16.
