Nonsense. There is no conversation rate fort CUP measurements to PSI.
The original .357 Magnum ammo was loaded to 45,000 CUP. So what ?
Again, some of the factory swagged lead ammo was loaded to more than the 40,000 CUP limit set for the .44 Magnum. But pressure limit was still 40,000 CUP.
BTW, there are no swagged lead, full power loads out there for the .44 Magnum any longer.
The bottom line is that the pressure limits for the .44 Magnum were not reduced to go easy of the Smith & Wesson revolvers. Same pressure levels just different method of measuring it.
The factories may be loading them on the light side these days. As opposed to loading them too hot in the past.
So what ? It has nothing to do with the strenth of the S&W revolvers made for the .44 Magnum. E
