The Nosler Partition Bullet Co. was founded in 1948 ... in the .338 Win. Mag., 300 gr. in the .375 H&H Mag. and .375 Ruger and 400 gr. in the .416 Rigby and .416 Rem. Mag. Even at close-range ...

375 H&H is rightfully considered the father of all belted magnums, given the number of subsequent cartridges based on its design. It took only one shot with this 300-grain Nosler Partition to take ...

Nosler landed on a design that was truly innovative, and the Nosler Partition Bullet Company was ... the M21 tips the scales at 7.1 pounds in its .300 Win. Mag. configuration seen here.