Quote: It should have caught on with the 'lowest presssure at any cost' crowd, but didn't.
By double rifle standards, the 500-416 is really not one of the "lowest pressure" cartridges. The 500-416 is rated at almost as much max pressure as the .416 Rigby. 46,000 psi for the 500-416, and 47,000 psi for the .416 Rigby.