Speer Load Data in Caliber .243 Win.
Speer
.243 Win.
Introduced in 1955 by Winchester Repeating Arms, the .243 Winchester has become a standout cartridge for hunters and precision shooters alike. Based on the .308 Winchester case, necked down to accept a 6mm (.243 inch) bullet, this round delivers a powerful combination of speed, accuracy, and mild recoil—perfect for a wide range of shooting disciplines. The .243 Winchester typically fires bullets ranging from 55 to 105 grains, with muzzle velocities between 2,700 and 3,200 feet per second, depending on load specifications. This broad performance envelope makes it ideally suited for both small game and varmint hunting—such as coyotes, foxes, and groundhogs—as well as medium game like deer and antelope at distances out to 300+ yards. Renowned for its flat trajectory and minimal recoil, the .243 Win is often recommended for new shooters, youth hunters, and those seeking a lighter-shooting rifle that doesn't sacrifice effectiveness. Its consistent accuracy has also made it a trusted choice for benchrest and competition shooting. Available in a wide selection of factory loads and supported by a robust array of reloading components, the .243 Winchester offers flexibility and convenience for shooters who demand high performance and adaptability. Whether you're chasing prairie dogs on open plains or stalking deer through wooded terrain, the .243 Winchester delivers precision and power in a user-friendly package.