The .257 Wby. Mag. was introduced in 1944, and within Roy’s stable of hard-hitting, flat-shooting magnums, the .257 was his fair-haired favorite, which says a lot. Capable of driving an 80-grain bullet at 3,900 fps and a 100-grain bullet upwards of 3,600 fps, the Weatherby far outpaced the .257 Roberts, its main quarter-bore competition at the time.
Based on a shortened, necked-down .300 H&H case, the .257 Wby. Mag. has an impressive case capacity of about 85 grains. Roy liked speed and power, and the .257 Wby. Mag. offers plenty of both. It’s one of the flattest-shooting cartridges on the market, and Weatherby’s 110-grain Nosler AccuBond load travels at a muzzle velocity of 3,460 fps. It can be sighted in 2.7 inches high at 100 yards for a 300-yard zero, and at 400 yards the bullet has dropped less than eight inches.
The .257 Wby. Mag. has more recoil and muzzle blast and burns more powder than the .25-06 Rem., but it shoots extremely flat and hits extremely hard. For long shots on sheep, deer, antelope and African plains game, the .257 Wby. Mag. is a great choice, and there are several elk hunters who use the .257 Wby. Mag. regularly.