SKU: WYB257100TTSX
UPC: 747115425068
The Weatherby 257 WBY Magnum 100gr TTSX ammunition represents the legacy of ultra-high velocity magnum design that Roy Weatherby pioneered in the 1940s. This cartridge delivers 3,570 feet per second with 100-grain Barnes TTSX bullets—a combination engineered for extended range performance, flat trajectory, and devastating terminal ballistics. The 20-round box format supports both practice sessions and field deployment with consistent, match-grade accuracy across shot strings.
The 257 Weatherby Magnum operates in the premium magnum class, delivering velocity levels that minimize bullet drop and drift at extended distances. The 100-grain Barnes TTSX projectile is a solid copper hollow-point design engineered for rapid expansion while maintaining deep penetration—critical factors for hunting medium to large game at distance. When loaded in a Weatherby rifle, this ammunition achieves the ballistic signature Weatherby is known for: flatter shooting, harder hitting, and more accurate than conventional cartridge alternatives at equivalent ranges.
This load is purpose-built for long-range hunters, rifle enthusiasts, and precision shooters working with Weatherby rifles or other 257 WBY-compatible platforms. The high velocity and light bullet weight make this round particularly effective for open-country hunting where extended sight lines and velocity advantage justify magnum performance. The 20-round packaging allows serious shooters to develop familiarity with point-of-aim and load behavior without excessive cost per shot during verification.
WARNING ⚠️
You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
Purchasing a Firearm? Click HERE to see our firearm purchasing guide.