300 H&H Magnum Ammo For Sale

With slightly better ballistic performance than the .30-06, the .300 H&H Magnum has been used for hunting all large African game since its introduction in 1925. The .300 H&H Mag is commonly found in the fine double rifles of its inventor, Holland & Holland. Learn More

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British company Holland & Holland introduced the .300 H&H Magnum in 1925. Initially called the “Super-Thirty,” it was designed to hunt African plains animals – all of which it can harvest except the very largest. The .300 H&H Mag has also been successfully employed for elk hunting, as well as taking moose and other large game animals in North America. Popular not only among hunters, competitive target shooters have also used the .300 H&H successfully, with the first major victory taking place at the 1935 Wimbledon Cup, where Ben Comfort's win exposed the cartridge to hunters and target shooters alike. By 1937, Winchester released the Model 70, chambered for the .300 H&H Magnum. In the process, the cartridge was cemented as a global leader of high-performance magnum cartridges for years to come.

Bullet weights for this cartridge are available between 150 grains and 220 grains, muzzle energy can exceed 3,700 foot pounds, and muzzle velocities can exceed 3,300 feet per second. The case for the .300 H&H Mag is based on Holland & Holland's most popular cartridge – their .375 H&H Magnum. They necked down the case to accept a 0.309" bullet, belted it and gave it a narrow sloping shoulder. While it is unusual to see a narrow shoulder like this, the .300 H&H Magnum has proven to have superior ballistics to the .30-06. With a heavy bullet that moves fast, a high ballistic coefficient and a range beyond 200 yards – the hunting community took notice of these numbers immediately. Even as far as 400 yards out, the .300 H&H retains about 2,000 foot pounds of energy.

When the .300 Winchester Magnum was introduced in the 1960s, the .300 H&H Magnum declined in popularity. Some voices of the gun culture speculated that only the fine double-barreled rifles made by H&H were what kept the cartridge alive, but it has experienced a new growth in popularity over the past few years, likely due to manufacturers selling bullets on the leading-edge of ballistic technology. Federal, for example, sells Nosler Partition bullets and Barnes Triple-Shock bullets in the .300 H&H Magnum cartridges they manufacture.

300 H&H Magnum Ballistics: Chart of Average 300 H&H Magnum Ballistics

Note: This information comes from the manufacturer and is for informational purposes only. The actual ballistics obtained with your firearm can vary considerably from the advertised ballistics. Also, ballistics can vary from lot to lot with the same brand and type load.

300 H&H Magnum Bullet WEIGHT Muzzle VELOCITY (fps) Muzzle ENERGY (ft. lbs.) TRAJECTORY (in.)
  Muzzle 100 yds. 200 yds. 300 yds. 400 yds. Muzzle 100 yds. 200 yds. 300 yds. 400 yds. 100 yds. 200 yds. 300 yds. 400 yds.
180 Grain 2870 2678 2494 2318 2148 3292 2866 2486 2147 1844 1.7 0 -7.3 -21.6
180 Grain 2880 2640 2412 2196 1990 3315 2785 2325 1927 1583 2.5 0.8 -6.8 -21.7
200 Grain 2750 2596 2447 2303 2164 3357 2992 2659 2355 2079 1.8 0 -7.6 -21.8
220 Grain 2550 2267 2002 1757 n/a 3167 2510 1958 1508 n/a -2.5 -0.4 -12 0