![]() The factory load 100 grain bullets can produce reasonably fast kills on medium sized game on targets up to 150 yards, but is better suited for medium sized game at 100 yards. 257 Roberts moved even further back on the market. 250 Savage was considered to have better velocity. 257 Roberts failed to gain any traction after the initial introduction of the 117 grain round into the market because the. The ballistic performance based off four grain types for velocity are 3,563 ft/s (75 gr), 3,368 ft/s (90 gr), 3,108 ft/s (100 gr), and 2,777 ft/s (115 gr). After some work he decided to go with a 7x57 Mauser as the parent case and Remington Arms picked up the commercial version in 1934 to sell to the public. ![]() 257 Roberts was designed in the 1920s when wildcatter Ned Roberts started to do experiments on the. Cartridge Type: Rifle Height: 2.233" Width: 0.473" Average FPS: 2790 Average Energy: 2039 Average Gr: 118 Recoil: 1.47 Power Rank: 3.29 of 20 ![]()
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