Modern? Like after 1920? wink

Remington was using AISI 1140 Manganese Sulfide Modified Carbon Steel for barrels until the Garza Settlement, at which time I believe U.S. makers went to 4140.
http://law.justia.com/cases/illinois/supreme-court/1990/68367-7.html

Garza Class Action
http://www.gunsmoke.com/guns/rem_lawsuit_intro.html

Settlement Announcement
http://www.gunsmoke.com/guns/rem_shotgun_lawsuit.html

Still collecting homeless chunks of Hunter Arms Royal, London, Crown, Nitro and whatever else is underneath our benches that can be definitively identified smile

https://sites.google.com/a/damascusknowledge.com/www/home