WEATHERBY 257 WBY - 100 GR - TTSX - 20 RDS/BOX
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Weatherby
WEATHERBY 257 WBY - 100 GR - TTSX - 20 RDS/BOX
The Weatherby .257 Weatherby Magnum 100-grain Barnes TTSX delivers the legendary ultra-high-velocity performance that has defined the Weatherby name since Roy Weatherby revolutionized hunting ammunition in the 1940s — combining a flat-shooting magnum cartridge with one of the most effective all-copper hunting bullets available today.
- Blazing 3,570 fps muzzle velocity for an exceptionally flat trajectory downrange
- Barnes 100-grain TTSX bullet expands reliably and retains nearly 100% of its weight
- Lead-free, all-copper construction ideal for California and other restricted hunting areas
- Polymer tip initiates rapid, consistent expansion even at long range and lower velocities
- Optimized for Weatherby Mark V and Vanguard rifles chambered in .257 Wby Mag
- 20 rounds per box — factory-loaded to Weatherby's exacting quality standards
Who This Is For
This load is purpose-built for serious big-game hunters who demand maximum performance from the .257 Weatherby Magnum — one of the flattest-shooting cartridges ever developed. Whether you're pursuing deer, pronghorn, or mountain game at extended distances, the TTSX's bonded-free copper construction and reliable expansion make it an outstanding choice for ethical, clean kills. It's also the go-to selection for California hunters who require lead-free ammunition under state hunting regulations.
Specifications
| Caliber | .257 Weatherby Magnum |
|---|---|
| Bullet Weight | 100 Grains |
| Bullet Type | Barnes TTSX (Triple-Shock X) |
| Bullet Construction | Lead-Free Solid Copper / Polymer Tip |
| Muzzle Velocity | 3,570 fps |
| Muzzle Energy | ~2,833 ft-lbs |
| Rounds Per Box | 20 |
| Lead-Free | Yes — California Compliant |
| Manufacturer | Weatherby |
| Country of Origin | USA |
Frequently Asked Questions
What makes the Barnes TTSX bullet different from standard hunting bullets?
The Barnes TTSX (Triple-Shock X) is an all-copper, lead-free bullet featuring a polymer tip that initiates expansion immediately upon impact. Unlike traditional lead-core bullets, the TTSX retains nearly 100% of its original weight through the target, delivering deep, straight-line penetration and a large wound channel. Its four cutting petals deploy reliably across a wide range of velocities, making it especially effective at longer ranges where velocity has dropped.
Is this ammunition compliant for hunting in California?
Yes. California state law requires the use of non-lead (lead-free) ammunition for all hunting on California lands. Because the Barnes TTSX bullet is constructed entirely of copper with no lead core, this Weatherby load fully meets California's non-lead ammunition requirements. It is an approved choice for deer, pronghorn, and other big-game hunting throughout the state.
Will this ammunition perform well in a non-Weatherby rifle chambered in .257 Wby Mag?
Yes — while Weatherby factory ammunition is optimized for the freebore design of Weatherby Mark V and Vanguard rifles (which contributes to their famously high velocities), it is safe to use in any rifle correctly chambered for .257 Weatherby Magnum. Note that actual muzzle velocity may vary slightly depending on your rifle's barrel length and chamber geometry, but performance and accuracy should remain excellent in any quality firearm chambered for this cartridge.
- Caliber:
- 257 WBY
- Bullet Weight:
- 100 GR
- Bullet Type:
- TTSX
- Purpose:
- Hunting
- Type:
- Rifle Ammunition
- Box Quantity:
- 20
- Case Quantity:
- 200
- Lead Free:
- No
