Oh. My mistake. I read somewhere a 500 Maximum could approach that and I wanted to get close to that with my 500 Smith and Wesson magnum. So I will keep the 50,000 psi in mind. I think keeping the 500 S&W magnum is better in the 50,000 to 55,000 psi and not pushing it to 60,000 or more. Increased pressure correlates to faster recoil impulse. The 454 Casull at 65,000 psi is an example of that. You are quoted as calling the 454 Casull the 378 Weatherby of the revolver cartridge world in terms of great recoil impulse. I would agree...