Question: The .308 Norma Magnum was superseded in popularity by a firearm that was released in what year?
Sentence (from ".300 Winchester Magnum"): The .300 Winchester Magnum (also known as .300 Win Mag or 300WM) (7.62×67mm) is a belted, bottlenecked magnum rifle cartridge that was introduced by Winchester Repeating Arms Company in 1963.
Relevant evidence: Yes