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The 243 Winchester Super Short Magnum or 243 WSSM is a rifle cartridge introduced in 2003. It uses a .300 WSM ( Winchester Short Magnum ) case shortened and necked down to accept a .243in/6mm diameter bullet, and is a high velocity round based on ballistics design philosophies that are intended to produce a high level of efficiency. [ 2 ]
The .243 is based on a necked down .308 Winchester, introduced only three years earlier. Expanding monolithic copper bullets of approximately 80 [3] to 85 [4] [5] grains or traditional lead rounds of 90 to 105 grains with controlled expansion designs are best suited for hunting medium game, while lighter rounds are intended for varmints. [6] [7]
Remington 788 with the 18.5 inch barrel in 243 Win caliber made in 1982. A left-handed version was produced in .308 and 6mm Remington calibers. The Carbine version with an 18.5-inch (47 cm) barrel was produced in .308 Winchester, 7mm-08, and .243. The stock was revised in 1980 being the only significant change throughout the production history.
Built from 1966 to 1979. The barrel length was 22" and had a weight of 7lbs. The Sporting Rifle was originally offered in .225 Winchester, .243 Winchester, .270 Winchester, .308 Winchester, and the .30-06 Springfield. [5] In 1969 the 308 Win. was dropped from production, and by 1970 only the 243 Win, 270 Win, and 30-06 Sprg were offered.
The AR-15 rifle usually comes chambered for either the military cartridge 5.56×45mm or the .223 Remington. Because of the pressures associated with the 5.56×45mm, it is not advisable to fire 5.56×45mm rounds in an AR-15 marked as .223 Remington, since this can result in damage to the rifle or injury to the shooter. [ 1 ]
It is chambered for .243 Winchester, .308 Winchester, .30-06 Springfield, .270 Winchester, 7mm Remington.Magnum, .300 Winchester.Magnum, .375 H&H Magnum and .458 Winchester Magnum [1] It is drilled and tapped for scope mounts. It can have a barrel length of 22, 24 or 26 inches. It weighs 7 pounds, and has a brown laminated stock.
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The over and under barrels are 20" long. The top barrel fires .22 LR or .22 WMR rimfire ammunition, while the bottom barrel fires .410 bore shotgun shells. The lower barrel is chambered for 3" shells, allowing the use of both 3" and 2.5" birdshot, buckshot, slugs, and self-defense rounds. The rifle barrel on top has open sights. [30]