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. […]
280 Remington Ballistics Chart and Cartridge Guide
The 280 Remington rifle cartridge is based on the more popular 30-06 Springfield cartridge case necked down to accept .284″ diameter bullets and is very similar to an earlier wildcat cartridge the 7mm-06. Remington began producing the 280 Remington in 1957. They changed the name of the cartridge to the 7mm Express Remington in 1979, and later changed it […]
308 Winchester Ballistics, Pros, Cons, Uses, and History
308 Winchester History The very popular 308 Winchester centerfire rifle cartridge was introduced to the public as a civilian sporting cartridge by Winchester in September, 1952. Winchester’s Model 70 bolt action and Model 88 lever action rifles were then chambered for the commercial 308 Winchester cartridge. Two years later, in 1954, the 308 Winchester would be slightly modified for […]
257 Weatherby Magnum Ballistics
257 Weatherby Magnum: The 257 Weatherby Magnum was introduced to the public in the mid 1940’s by Roy Weatherby as one of his original cartridges and his personal favorite as well. The 257 Weatherby Magnum cartridge case itself is the 300 H&H magnum case that has been necked down to 25 caliber. It was blown […]
7mm WSM Ballistics
The 7mm Winchester Short Magnum is a newer 28 caliber centerfire rifle cartridge developed in partnership with Browning Arms Company and Winchester ammunition This rifle cartridge made its debut and was introduced to the shooting public in 2001. The 7mm short magnum cartridge is chambered in Winchester’s Model 70 bolt action rifle and is based on the 404 Jeffery cartridge case. […]
300 Win Mag vs 300 WSM Ballistics
300 Win Mag Vs 300 WSM Ballistics When shooting a 180 grain projectile, the 300 Winchester Magnum has a muzzle velocity of 3,130 feet per second, with 3,917 pound feet of energy. At 100 yards velocity slows to 2,927, with 3,424 pounds of energy. Comparatively, the 300 WSM launches a 180 grain projectile to a […]
340 Weatherby Magnum Ballistics and Information
340 Weatherby Magnum: The 340 Weatherby Magnum was developed by necking up Weatherby’s already well established 300 Weatherby Magnum to a bullet diameter of .338 inches. This filled the Weatherby cartridge gap between their 300 Magnum and 375 Magnum. This cartridge went into mass production in 1963. The 340 Weatherby Magnum is very powerful, loaded […]
