Magnum Cartridge Comparisons

Magnum Cartridge Comparisons For those considering magnum rifles for Western hunting...

image The 7mm Mag is not in the true magnum category, since it has about 700 ft-lbs. less muzzle energy than the 300 Weatherby, 8mm Rem Mag, or 338 Win Mag. The 7mm Mag is only about a 100 ft-lbs. ahead of a maximum 30-06 load with the180 grain bullet. But the 7mm Mag will deliver high ballistic coefficient 175 grain bullets with plenty of power—1,900 ft-lbs. at 400 yards. The 300 Win Mag has 300 ft-lbs. more energy than the 7mm Mag, but is still 400 ft-lbs. lighter at the muzzle than the 300 Wea Mag, 8mm Rem Mag, and 338 Win Mag.

The 300 Wea Mag, 8mm Rem Mag, and .338 Win Mag can all be loaded to the same muzzle energy—about 4,000 ft-lbs. Smaller caliber bullets of the same weight have a higher ballistic coefficient, so the 300 Wea is best for long shooting of these three. The 338 Win Mag can shoot heavier