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300 Weatherby Magnum Ballistics

July 19, 2021 By Joshua Gillem

Photo courtesy of Federal Premium

300 Weatherby Magnum:


The 300 Weatherby Magnum is a thirty caliber centerfire rifle cartridge that was introduced to the public in 1948 by Roy Weatherby.

The 300 Weatherby Magnum cartridge case itself is nothing more than an improved version of the 300 H&H magnum made by blowing out the full length of the case which then sports a double radius shoulder and a long neck

The 300 Weatherby Magnum is a very powerful cartridge.

When loaded with a 220 grain bullet, it delivers 2 tons of energy at the muzzle allowing you to safely hunt all of the North American game animals as well as most African game animals.

The 300 Weatherby Magnum when loaded with 165 – 180 grain boat tail bullets becomes a very effective long range mountain rifle when going after goats and sheep.

The 300 Weatherby Magnum is well known for heavy recoil and will make most average rifleman flinch badly as they anticipate the recoil.

A good idea to keep shooting this rifle accurately is to load down into the 130 grain bullet weight range and do some target practice or varmint hunting as this reduces the recoil tremendously on the 300 Weatherby Magnum.

300 Weatherby Magnum Ballistics Charts:

This 300 WBY Mag ballistic chart shows 180 grain Federal Premium Trophy Bonded cartridges:

Muzzle100 YDS200 YDS300 YDS
Velocity (FPS)3100290527192540
Energy (FT/LB)3841337329552579
Drop (Inches)/+1.30-6.0

This 300 Weatherby Magnum ballistic table shows 200 grain Hornady ELD-X Precision Hunter:

Muzzle100 YDS200 YDS300 YDS
Velocity (FPS)2960280426522505
Energy (FT/LB)3890349131232786
Drop (Inches)/+1.50-6.4

300 Weatherby Magnum Barrel Specifications:

Common Barrel Twist Rate – 1/10 – 1/12
Bore Groove Diameter – .3075″

300 Weatherby Magnum Reloading Specifications:

Bullet Diameter – .308″
Maximum Case Length – 2.825″
Trimmed Case Length – 2.815″
Primer Size – Large Rifle

Filed Under: Ballistics, Ammo, Gun Info Tagged With: 300 wby mag, 300 weatherby magnum, ballistics, centerfire rifle, hunting ballistics

About Joshua Gillem

Josh is a lifelong practitioner and student of the gun. He grew up shooting/hunting with his dad, and was given his first gun, a 12 gauge shotgun, when just a small boy. After high school, he joined the Marines where his love for firearms blossomed as he qualified with an M16A2, an M9, and a 240G. Josh has been writing about firearms and tactics for several years, is a staunch supporter of the Second Amendment, and believes that each individual person has the right to self-defense by any means necessary. Currently residing in gun-friendly North Carolina, he carries a concealed gun on a daily basis, even in his own house.

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