I in no way profess the loads to be safe, this is data provided by Quickload. This is all according to the computer and its predetermined seating depth etc...
Looked up 50 Beo on quickload and did some playing. 325gr Speer H110 50gr 78% fill 2,232fps produces 32,887psi with a max load at 52gr 80% fill producing 36,612psi and 2,312fps.
H4227 gives a better fill but higher pressure and lower velocity???
If you want me to look up some powders yoiu have, shoot me an email....firstname.lastname@example.org
It also has the 458 Socom