Originally Posted By: Drew Hause
Winchester Nickel Steel, introduced in 1889; 100,000 psi.
Winchester Proof Steel, developed for the Model 21 and introduced in 1931; 115,000-120,000 psi.
and WPS also added to the M12 to replace the earlier Nickel steel, ditto the M54 with Nickel steel, later WPS on the M70-- all "running changes"- Betcha a Maurice Chevalier straw hat that the brains at WRA wished they had never fooled with the ill-fated stainless steel barrels in the mid to late 1920's- what a Fubar!!


"The field is the touchstone of the man"..