Norma Unprimed Brass 300 Win Mag 50Pk universal taper LOCK function to avoid accidentally

LOCK function to avoid accidentally turning it on during transit or storage

Low torque design

full-length sizing and shoulder bump neck size

and fitted with a combination of CVB Zero Bearing Technology and Black Seal Anti Corrosion ball bearings

20 Large Screwdriver

Norma Unprimed Brass 300 Win Mag 50Pk universal taper LOCK function to avoid accidentallyIntroduced as late as 1963 this cartridge was soon to become the most popular in the line of . 300 magnums. Unlike the predecessors . 458, . 264 and . 338 Winchester Magnums it has a longer case and a rather short neck (. 264) in order to increase the case capacity. As a rule of thumb the neck of a cartridge should be equal to the caliber or preferably a little longer, but experience has shown that the . 300 Win. Mag. has not really suffered in this