What is the .300 Winchester Magnum?

The .300 Winchester Magnum is a factory rifle cartridge in the Winchester Magnum family, introduced in 1963.

What bullet diameter does the .300 Winchester Magnum use?

The .300 Winchester Magnum uses a bullet diameter of 0.308 inches.

The .300 Winchester Magnum has a Belted, Bottleneck case type.

The .300 Winchester Magnum uses a Large Rifle (.210") primer.

The Winchester Magnum family includes the .300 Winchester Magnum and other related cartridges. Browse the full family on OpenCartridge.

Rifle Factory

Dimensions (inches)

Parent Cases

.375 H&H Magnum

.300 H&H Magnum

Community Load Data

Filter Loads

Bullet Type

Powder (name or brand)

Min MV (fps)

Max MV (fps)

No load data submitted yet for .300 Winchester Magnum.

No discussion yet. Be the first to start a conversation about .300 Winchester Magnum.