My Mosin Nagant M-44 uses 7.62X54R . I know the older surplus stuff is corrosive , but there is "newer" surplus stuff for sale at different places and I would like toknow how to find out if its corrosive or not . I bought some of the newer stuff that is wrapped in paper and wax paper and the gun shop guy said it is marked 1982 so its non-corrosive . The box had no marks but each round had a "10 " and a "82" on the rim next to the primer . Does this mean 10 th month and the year 1982?