.240 Weatherby Magnum

Rifle cartridge .240 Weatherby Magnum Munit04.jpg 300px .240 Weatherby Magnum (1st from left) USA Rifle Roy Weatherby 1968 Weatherby Belted, bottleneck .243 .272 .429 .453 .472 2.496 3.100 Large rifle 64 65000 1 in 10 in mm on 1 60 HP 3817 1942 75 HP 3555 2105 80 SP 3514 2194 90 SP 3394 2303 100 HP 3202 2277 Hodgdon http://data.hodgdon.com/cartridge_load.asp Hodgdon Online Reloading Data 2007-07-20 https://web.archive.org/web/20071111143616/http://data.hodgdon.com/cartridge_load.asp 2007-11-11 dead The .240 Weatherby Magnum was developed in 1968 by Roy Weatherby. In the development of his own .240in/6 mm cartridge, Weatherby was significantly influenced by both the success and the limitations of the .244 H&H Magnum cartridge devised in England by his friend and colleague David Lloyd. It was the last cartridge to be designed by Roy Weatherby.The .240 Weatherby Magnum by Chuck Hawks Design The .240 Weatherby Mag. is a proprietary cartridge used only in Weatherby rifles. This particular Weatherby case is unique: other than shape, it isn't physically based on other Weatherby cases, having the same rim diameter and a similar length to the .30-06. It utilizes the traditional Weatherby rounded double shoulder and a belted case with a length of 2.496in, significantly shorter than the 2.8in case of the .244 H&H Mag.The .240 Weatherby Magnum by Chuck Hawks (subscription required) Performance In terms of velocity, the .240 Weatherby Magnum was once the fastest commercially produced 6 mm cartridge. There were several faster wildcat rounds available, but the .240 Wby. Mag. outclassed the 6 mm Remington and the newer .243 WSSM by about 150 ft/s m/s on.Compared: The .243 WSSM and .240 Wby. Mag. by Chuck Hawks (subscription required) However, the lightweight .243 WSSM 55gr Ballistic Silvertip now outpaces Weatherby's offerings according to some. Olin Corporation 190 Carondelet Suite 1530 Clayton, MO 63105 http://www.winchester.com/Products/rifle-ammunition/Advanced/Ballistic-Silvertip/Pages/SBST243SS.aspx SBST243SS 2014-07-28 https://web.archive.org/web/20141013192621/http://www.winchester.com/Products/rifle-ammunition/Advanced/Ballistic-Silvertip/Pages/SBST243SS.aspx 2014-10-13 dead Loading data from Western Powders puts the .240 Wby. Mag. at over 4,000 ft/s m/s on with a 62 grain Barnes bullet.http://www.accuratepowder.com/wp-content/uploads/2010/09/WP_LoadSpec_1-23-14.pdf Western Powders While favoured by some varmint hunters, the .240 Wby. Mag. is not much liked by some reloaders because the case cannot be formed out of any other brass; one either has to buy Weatherby ammunition or reload used Weatherby cases which tend to be more expensive than those for more common cartridges. With heavier bullets the .240 Wby. Mag. makes for a good deer hunting cartridge, but it does tend to require a long (>23 in mm.) barrel in order to achieve peak performance.March 2025 +Performance for 100 grain bullet from utilizing a factory 26" test barrel and a Nosler Partition bullet) Muzzle 100 yd 200 yd 300 yd 400 yd 500 ydTrajectory 2.8 3.5 0 -8.4 -22.9Energy (ft·lbf)2576 2183 1844 1550 1294 1073Velocity (ft/s)3406 3136 2882 2642 2415 2199 +.240 Weatherby Performance Comparison Cartridge Bullet weight Muzzle velocity Muzzle energy .240 Weatherby Magnum 100 gr g on 3406 ft/s m/s on 2576 ft·lbf J on .240 Apex 100 gr g on 2900 ft/s m/s on 1865 ft·lbf J on .242 Rimless Nitro Express 100 gr g on 2800 ft/s m/s on 1740 ft·lbf J on .243 Winchester 100 gr g on 2960 ft/s m/s on 1945 ft·lbf J on .243 Winchester Super Short Magnum 100 gr g on 3110 ft/s m/s on 2147 ft·lbf J on .244 H&H Magnum 100 gr g on 3500 ft/s m/s on 2720 ft·lbf J on .246 Purdey 100 gr g on 2950 ft/s m/s on 1930 ft·lbf J on 6 mm Lee Navy 100 gr g on 2680 ft/s m/s on 1595 ft·lbf J on 6 mm Remington 100 gr g on 3100 ft/s m/s on 2133 ft·lbf J on See also List of rifle cartridges Table of handgun and rifle cartridges References https://archive.today/20130203014227/http://www.stevespages.com/jpg/cd240weatherbymagnum.jpg Cartridge Dimensions at Steves Pages mm)/240%20Weatherby%20Magnum%20page%20209.pdf .240 Wby dataNovember 2018 InternetArchiveBot yes at Accurate Powder External links Weatherby Web Site Category:Weatherby Magnum rifle cartridges Category:Pistol and rifle cartridges Category:Magnum rifle cartridges