So the question of power for of .45-70 Gov. v. .458 SOCOM comes up fairly often. This got me curious as the what is rated for a higher pressure as they both take the same bullet.
For .458 SOCOM, it is 35k PSI, but unfortunately the .45-70 Gov. is measured in CUP, meaning there is no direct conversion for all I've found. It is listed at 28k CUP. Any one know of any official PSI value for modern .45-70?
Although the Denton Bramwell equation does suggest ~42k PSI is close.
For .458 SOCOM, it is 35k PSI, but unfortunately the .45-70 Gov. is measured in CUP, meaning there is no direct conversion for all I've found. It is listed at 28k CUP. Any one know of any official PSI value for modern .45-70?
Although the Denton Bramwell equation does suggest ~42k PSI is close.