800X is far from ideal in the mentioned application.
Just because a load is 'published' does not means it's worth a crap.
There are loads published that either will not fit in the case or don't take up enough room to get a decent crimp. The manuals are FULL of such ill advised loads.
I wouldn't even fool with a load in a Federal hull that does not use a Federal wad. The low pressure in the Windjammer load I'd bet is a result of a piss poor gas seal and unburned powder.
No idea why they publish such rubbish.
