Talyn
SAINT
The .284 Winchester somehow continues to rise from the ashes of changing rifle fashions. It appeared in 1963 in Winchester’s Model 88 lever-action and Model 100 semiautomatic rifles, and was designed to basically duplicate the ballistics of the .270 Winchester and, to a lesser extent, the .280 Remington in “faster-firing” rifles.
To attain .270 ballistics required more powder capacity than the .308, so Winchester created a slightly fatter and longer case. Its rim was the same diameter as the .308’s. However, the .284’s case in front of the extractor groove measured .500 inch, tapering only slightly to a steep 35-degree shoulder. This approximates the present trend toward shorter, sharper-shouldered “accuracy” rounds.
The .284’s design (center) resembles many newer “accuracy cartridges,” with a
relatively short, fat body and sharp shoulder angle, but it was originally designed
to fit in magazines designed for the .308 Winchester (left), while approximating
the powder capacity of the .270 Winchester (right).
To attain .270 ballistics required more powder capacity than the .308, so Winchester created a slightly fatter and longer case. Its rim was the same diameter as the .308’s. However, the .284’s case in front of the extractor groove measured .500 inch, tapering only slightly to a steep 35-degree shoulder. This approximates the present trend toward shorter, sharper-shouldered “accuracy” rounds.
The .284’s design (center) resembles many newer “accuracy cartridges,” with a
relatively short, fat body and sharp shoulder angle, but it was originally designed
to fit in magazines designed for the .308 Winchester (left), while approximating
the powder capacity of the .270 Winchester (right).
