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257 Roberts

257_roberts
The .257 Roberts, commonly known as the ".257 Bob," is a rifle cartridge introduced in the 1930s by Remington. It is based on the 7x57mm Mauser case, necked down to accept a .257-inch (6.53mm) diameter bullet. The cartridge is named after Ned Roberts, who was instrumental in its development.
The .257 Roberts is renowned for its versatility and mild recoil, making it a popular choice for hunting medium game such as deer and antelope. Its performance is comparable to the .243 Winchester, offering flat trajectories and good accuracy. With modern loadings, the .257 Roberts can achieve muzzle velocities in the range of 2,800 to 3,000 feet per second with a 117-grain bullet.
Due to its moderate recoil and effective performance, it is often recommended for younger or smaller-framed shooters and those who prefer a lighter recoil during extended hunting trips. Though not as widely used today as some more modern cartridges, it retains a loyal following among enthusiasts.

Die Sets
Lee Collet Necksizing 2-Die Set
90703
Lee RGB Die Set
Lee Full-Length Sizing Die Set
90551
Lee Breech Lock Die Set
Lee Ultimate 4-Die Set
Lee Loader
Single Dies
Full-Length Sizing Die
91046
Ez X Expander: SE2540
Sizing Die
Neck Sizing Die
91007
Undersize Sizing Die
Charging Die
90194 (Long Charging Adapter)
Seating Die
91406
Factory Crimp Die
90835 (Collet Style)
Taper Crimp Die
Inline Bullet Feed Die
Die Accessories
Micrometer Adjuster
92215
Guided Decapper
Case Conditioning Tools
Case Length Gauge and Shell Holder
90123
Quick Trim Die
91357
Presses
Reloader Press (50 RPH)
Hand Press (50 RPH)
Challenger Press (50 RPH)
Classic Cast Press (50 RPH)
Value Turret Press (250 RPH)
Classic Turret Press (250 RPH)
Ultimate Turret Press (250 RPH)
Pro 1000 Press (500+ RPH)
Pro 4000 Press (500+ RPH)
Six Pack Pro Press (500+ RPH)
Shell Plates and Holders
Priming Tool Shell Holder
90202 (#2)
Universal Press Shell Holder
90519 (R2)
X-Press Shell Holder (APP)
91535 (#2)
Pro 1000 Shell Plate
Auto Breech | Pro 4000 Shell Plate
Six Pack Pro Shell Plate
91836 (2L)
Inline Bullet Feed
Inline Bullet Feed Die
Inline Bullet Feed Kit
Inline Bullet Feed Magazine
Bullet Casting
Classic Bullet Sizing Kit
Breech Lock Bullet Sizer and Punch
Bullet Molds

Micrometer Adjust Screw

From $20.00

Power Grip Shell Holder

92149
$10.00

Challenger III

From $117.00

Ultimate Turret Press

From $320.00

Deluxe APP Press Kit

91898

Includes:

  • Press
  • Roller Handle
  • Priming System
  • Universal Case Feeder
  • APP Deprime Kit
  • Bottle Adapter
$155.00

Six Pack Pro Press

From $400.00