Performance
The .243 produces a velocity of 2,960 feet (902.21 m) per second with a 100-grain (6.6 gram) projectile from a 24-inch (610 mm) barrel. Commercially loaded .243 ammunition is available with bullet weight ranging from 55 grains (3.6 g) up to 115 grains (6.8 g). Twist rate of barrel is the major deciding factor in which bullets to use, 1:10 being the most popular as it is sufficient to stabilize up to 100-gr. bullets. However, for VLD (very low drag)-profile and bullets heavier than 100 grs., a 1:8 or 1:7 (for 115-gr. VLD bullets) is necessary.
The .243 has gained substantial worldwide popularity, and commercially loaded ammunition is easy to find on every inhabited continent. Along with the .270 Winchester, the .308 Winchester, .223 Remington, and .30-06, it is among the most popular and widely available of all centrefire cartridges.
Read more about this topic: .243 Winchester
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“Still be kind,
And eke out our performance with your mind.”
—William Shakespeare (1564–1616)