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240 WBY Mag Ballistics and Cartridge Guide

July 13, 2021 By Joshua Gillem

Photo courtesy of Weatherby

240 Weatherby Magnum:

The 240 Weatherby Magnum was introduced in 1968 as the twelfth Weatherby cartridge in their belted long range rifle cartridge line-up.

The 240 Weatherby cartridge case is unique in its design and is best described as a .30-06 cartridge case necked down to .243″ caliber and a belt added to the case. 

The 240 Weatherby Magnum is one of the most powerful commercially available cartridges in .24″ caliber, able to send 85 grain bullets downrange at velocities of 3,500 fps. and 100 grain bullets in excess of 3,400 fps.

That makes it a great dual purpose cartridge for varmint and deer with the ability to dispatch of either one out to 400 yards quite quickly.

The 240 Weatherby Magnum is a moderate to heavy recoiling cartridge which is still comfortable enough for most anyone to shoot.

For anyone who lives and hunts in areas where a good dual purpose, flat trajectory cartridge is needed, the 240 Weatherby Magnum cartridge has a lot to offer with excellent ballistics.

240 Weatherby Magnum Ballistics Chart:

The following ballistics chart shows a 100 grain Spitzer from Weatherby with a ballistic coefficient of .302.

Muzzle100 YDS200 YDS300 YDS
Velocity (FPS)3200287525732290
Energy (FT/LB)2274183614701165
Drop (Inches)/3.64.40.0

Cartridge:

Bullet Diameter – .243″.
Primer Size – Large Rifle.
Primer Type – Magnum.
Case Neck Diameter – .272″.
Case Shoulder Diameter – .429″.
Case Base Diameter – .453″.
Case Rim Diameter – .472″.
Trimmed Case Length – 2.490″.
Maximum Case Length – 2.500″.
Maximum Overall Length – 3.000″.

Filed Under: Ballistics, Ammo, Gun Info Tagged With: 24 caliber, 240, ballistics, hunting ballistics, rifle ballistics, weatherby

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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