223 Wylde

.223 Wylde chamber is a hybrid rifle chamber designed to allow 22 Caliber Barrels to safely fire both .223 Remington and 5.56 NATO ammunition. While the cartridge dimensions of both rounds are the same, 5.56 NATO loads produce pressures in excess of the .223 safe spec. The 5.56 chamber has angular differences that allow higher pressures safely. The .223 can be fired from a 5.56 chamber safely but with reduced accuracy. The Wylde is a hybrid chamber designed to allow both ammunition types to be safely fired with good accuracy.