Haven't been on here in a while.Was a gm journeyman tech for over 25 years and now liquidate customers unwanted property and or trash out homes having started my own business about 2 years ago.Most of these people are deceased and the kids live out of state and all they want is the house empty and sold to get the big payday.The trashout I did about a week ago there was a ammo box with 16 boxes(800 rounds) of military 158 grain full mc bullet 38 special ammo headed for the dumpster(I always go through the stuff first before the guys start throwing things out willy nilly).Ammo is nice,clean and dry and has the same lot on the cardboard boxes as the metal box it is in(LOT WCC 6009).Is this ammo SAFE to shoot in my approx.1916 model of 1905 4th change revolver?I had my smith check this gun out and he gave it a clean bill of health.locks up good and is in very nice used shape.It's been used but not abused.Serial # is 258xxx.I've heard the sw revolvers before 1920 or so did not have heat treated cylinders.I've shot plenty of non +p commercial 38 special ammo through it in the past and just want to make sure this stuff is safe,I'm sure it is but would like the experts opinions. Any help is appreciated.