Winchester cartridges retained the .30 W.C.F. designation on their headstamps and advertising up until about 1946 after which they changed their nomenclature to .30-30. Interestingly, today it's called the .30-30 Winchester but it was Marlin & U.M.C. that gave it that designation.
Over the years, it has been known as the:
.30 WINCHESTER SMOKELESS
.30 WINCHESTER
.30 W.C.F.
.30-6-100
.30 Marlin
.30-30 MARLIN SMOKELESS
.30-30 S.
.30-30 W.C.F.
.30-30 Win.
.30 American (Federal case, small primer)
DWM 543 (Germany)
7.62x51R (Europe)
copied and pasted from here
http://shootersforum.com/showthread.htm?p=52554
