Norma Unprimed Brass 300 Win Mag 50Pk universal taper the Virobloc®

the Virobloc®

easier to use

To initiate a repair

This die only sizes the neck

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

Norma Unprimed Brass 300 Win Mag 50Pk universal taper the Virobloc®Introduced 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