 It has never been as popular as the .30-06; but the mystique of well-crafted rifles chambered for the .300 H&H keeps the cartridge in use despite its repeatedly reported demise.The .300 H&H is a fine African plains game cartridge, and suitable for all but the most dangerous big game and pachyderms.The CIP treats the .300 H&H Magnum and the .30 Super Belted Rimless H&H as separate entities and provides separate entries for the cartridges.