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257 Roberts


In the 1920s, Ned Roberts necked the 7×57 Mauser down to 25-caliber. In 1934, Remington standardized his wildcat. Remington use of Roberts’s name was testament to how esteemed a gun-writer he was. Ballistically, the 257 Roberts is in the same class as the 250 Savage but has always had an edge due to the faster standard twist rate that allow use of heavier bullets.

With the best modern components, this round is suitable for game up to elk. As with all rounds, shot placement trumps all other considerations; bullet performance comes in as almost as important; and delivered energy comes in far behind those in importance.

A common chambering in bolt-action rifles for many decades before introduction of the 243 Winchester; with well-placed shots the 257 earned a reputation for doing the job on deer and even elk. The modest recoil made it easier for many shooters to place their shots well.

As my friend, Terry Brewer, correctly observed: “There is no replacement for shot placement.”



For reasons I have not been able to identify, Roberts and then Remington established a relatively modest pressure standard for the 257. This limited performance. In the mid-1980s, Winchester started offering +P ammunition that improved the situation. Loads at this pressure come within about 150-fps of matching 25-06 Remington ballistics.

Heritage of this case dates to the 1870s with the introduction of the 40-70 Ballard case.

The text associated with the cartridge description reflects opinions and conclusions of the author, M.L. (Mic) McPherson. Lee Precision and its employees do not necessarily either agree or disagree with any of his comments. We present these with due deference to his recognized expertise in the firearms field. His acumen extends to handloading and all aspects of ballistics - internal, external, and terminal.
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