well that's funny, i've seen arnold classic videos of him doing a 365 axle press for three with absolutely terrible form and a way cockeyed hand placement. logic would tell us that if he gripped the bar evenly and was using a normal barbell 405 wouldn't be that difficult.
keep in mind a 405 standing shoulder press is WAY impressive, considering in the videos ross doesn't use any leg drive whatsoever. a 405 jerk isn't much, a 405 push press is pretty impressive, but a 405 momentum-less military is damn impressive.