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The .284 Winchester was designed to achieve .270 Winchester and .280 Remington performance from the new Winchester Model 100 autoloader and Winchester Model 88 lever-action rifles. The result was a 7 mm cartridge with about the same overall length as the .308 Winchester but with a wider body, that yields a powder capacity about the same as that ...
450 Bushmaster : Uses .284 Winchester cases. Cut the length to 1.700" to form a straight-wall cartridge, from 2.170". The .284 Winchester case is very similar to the .308, however, the .284 case has a body diameter of 0.500", and the .308 case has a body diameter of 0.471". Both share an identical head/rim.
The parent case .284 Winchester was created around 1963, but did not see extensive commercial use. The 6.5 caliber allowed for the use of long, aerodynamic bullets. In 1999, Norma submitted it to CIP. It has since been standardized as the 6.5mm-284 Norma.
A .308 Winchester necked down to 7 mm (.284 caliber), the 7 mm-08 provides a flatter trajectory with lighter, more aerodynamic 7 mm bullets. [14] 7-30 Waters. Designed to improve the performance of lever-action rifle designs dating back to the 1890s, the 7-30 Waters is a .30-30 Winchester necked down to 7 mm (.284 caliber). Even with the lower ...
Winchester claims a muzzle velocity (MV) of 3,225 ft/s with a 140 grain bullet for their 7mm WSM cartridge; the claimed muzzle energy (ME) is 3,233 ft. lbs. With a 160 grain bullet the Winchester figures are 2990 ft/s and 3176 ft. lbs. at the muzzle. The lighter, shorter 7mm bullets are preferred in these short case magnums. [2]
.32-20 Winchester: ammunition United States of America: Q4545263.32-40 Ballard: Rifle cartridge Q2806379.320 Revolver: cartridge United Kingdom: Q4545264.325 Winchester Short Magnum: cartridge United States of America: Q2806381.327 Federal Magnum: Revolver cartridge designed by Federal Premium Ammunition and Sturm, Ruger & Co. Q4545284.33 ...
The .280 Remington is capable of generating slightly higher velocities in heavier bullet weights (150 grains and above) than the .270 Winchester due to a marginally greater case capacity. However, the ballistic coefficient of equal-weight bullets favors 6.8mm (.277) caliber bullets over 7mm (.284) bullets of similar design.
The C.I.P. [4] has registered both the 30-284 NOLASCO [7] and the extremely similar 30-284 Winchester [8] (both considered "wildcat cartridges" based on the .284 Winchester in the US, but commercially made in Europe.) Both these chamberings completely remove the original 7.5×54 MAS chamber, and have the same pressure ratings as the 7.5×54 MAS ...