Hornady Superformance 257 Roberts +P 117gr SST – 20 Rounds

Hornady Superformance 257 Roberts +P loads push this classic wildcat-turned-standard chambering to modern velocity standards without exceeding SAAMI pressure limits. The 117-grain SST (Super Shock Tip) bullet features a polymer tip that initiates expansion reliably while the secant ogive boattail design delivers flat trajectory and consistent long-range accuracy. This +P loading delivers 100–200 fps more velocity than standard-pressure 257 Roberts rounds, making it better suited for medium game at extended distances while maintaining the cartridge's reputation for mild recoil and excellent precision.

These Superformance rounds use temperature-stable propellants that perform consistently across weather conditions. Boxer-primed brass cases are reloadable. Suitable for bolt-action and strong single-shot rifles chambered in 257 Roberts +P. Do not use +P ammunition in older or weaker actions — verify your firearm is rated for +P pressures before use. Available in 20-round boxes.

• Caliber: 257 Roberts +P
• Bullet Weight: 117 grains
• Bullet Style: SST (Super Shock Tip)
• Muzzle Velocity: ~2,945 fps (24" barrel)
• Box Count: 20 rounds
• Case Count: 200 rounds (10 boxes)
• Case Type: Boxer-primed brass
• Primer: Centerfire
• Use: Medium game hunting, long-range precision