One Cartridge, not a box: .225 Winchester by Winchester/Olin, factory loaded with (then new) Winchester Brass cases with “W-W SUPER 25 WIN” Head-Stamp and loaded with a 55 grain, JSP(Jacketed Soft Point) projectile.
History of the .243 Winchester Cartridge: The 225 Winchester (.22 caliber) semi-rimmed cartridge was introduced in 1964 to basically replace the .220 Swift cartridge in the Winchester Model 70 bolt-action rifle.Even though the 225 Winchester ballistics were as good as the 22-250 Remington it was never popular due to the 22-250 Remington market share.Now considered obsolete however Winchester has done special runs from time to time, but at very high retails
