240 Weatherby Magnum History and General Information.  The 240 Weatherby Magnum was introduced in 1968 as the twelfth Weatherby cartridge in their belted long range rifle cartridges 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 .24 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 80 grain bullets down range at velocities of 3,500 fps. and 100 grain bullets in excess of 3,200 fps. which makes it a great dual purpose cartridge for varmint and deer with the ability to dispatch of either one out to 400 yards.  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 hunt 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 Barrel Specifications. Common Barrel Twist Rate - 1/10 Bore Groove Diameter - .243"   240 Weatherby Magnum Reloading Specifications. Bullet Diameter - .243" Maximum Case Length - 2.500" Trimmed Case Length - 2.490" Primer Size - Large Rifle   240 Weatherby Magnum Loading Data Hints.  The 240 Weatherby Magnum will give excellent bullet performance using 90 - 100 grain weight bullets with a slower burning powder like i.m.r. 4831 using magnum primers for ignition. 240 Weatherby Magnum Reloading Data. Hodgdon Reloading Data Center.   240 Weatherby Magnum Trajectory and Hunting Applications.  This is a down range trajectory chart for the 240 Weatherby Magnum cartridge with the scope mounted 1.5 inches above the bore center line plus if you were using this load, its effective hunting bullet energy range with well placed shots on, Varmint / Predator size game, such as Bobcat, Cougar, Coyote. Deer size game, such as Antelope, Blacktail, Hogs, Javelina, Mule, Whitetail. Elk size game, such as Caribou, Black Bear, Sheep. Moose size game, such as Brown Bear. Bullet diameter .243" Bullet weight 100 grains Bullet ballistic coeffecient .376 Bullet velocity 3,300 feet per second Range 100 yds. 200 yds. 300 yds. 400 yds. 500 yds. + + 1.2 0 - 5.8 - 17.3 - 35.8 2036 1702 1412 1165 956  Varmint + + + + + +  Deer + + + + - -  Elk + - - - - -  Moose - - - - - - Copyright 2001 - 2010