FYI 1917 proof pressures, Winchester

[John Y Cannuck]

 

[John Y Cannuck]

Just a FYI. Stay clear of those proofs, they were on new rifles.

 

[John Y Cannuck]

You can see things like the service pressure of the 44WHV in the '92, is above the proof pressure of the 44 in the 73.

 

[9.3mauser]

Also probable that those figures are c.u.p., not p.s.i.

 

[colt1851]

Interesting