I have overloaded the 10mm with many powders in work ups.... until the brass failed.
If you read the published data, you might think LONGSHOT is going to produce a lot of velocity.
But real testing shows it is a dead end.
The most power I can get is from 800X.
But this takes many steps to compress the flakes in the case.
The most power that is easy is with Power Pistol.....Not longshot, not Blue Dot, not Enforcer , not AA#9, not N105, not 3N37,
