In 1962, Remington introduced its famous 7mm Magnum and it got great reviews. Perhaps for these two reasons, the .264 Winchester Magnum never caught on with American hunters.

The 7mm Remington Magnum case holds more gunpowder than the 7mm PRC case. But because Hornady loads the 7mm PRC to 65,000 psi as opposed to 61,000 psi, the 7mm PRC is faster by about 100 to 150 fps.