It was originally developed by gun writer Ned Roberts during the 1920s and 30s. I also inherited some of his loads for this rifle. The .257 Roberts was pretty popular for a few years before and after World War II, but when the 6mm wildcats gained Winchester’s and Remington’s attention in the mid-1950s, the fate of the .257 Roberts was sealed. The .25s have been American favorites for over a century, dating back to the .25-35 and .25-20 Winchester cartridges; by the time the .250-3000 Savage and .257 Roberts hit the scene, hunters were totally hooked. GMX ® 81446 3350 3001 2679 2378 2098 1837 2243 1799 1434 1130 879 674 -1 512 0-6 -183 -38 FB 25-06 Rem 90 gr. So Im looking at getting a 257 Roberts or 25/06 I noticed there is a about 100fps difference between them. The .257 shoots a 115gr bullet I beleive and most folks shoot an 80gr or so in the .243, so the .257 has a little more meat to the projectile. Remington brass, Winchester primers, bullets are .006” off the lands. I found Hornady superformance at my local scheels bout its 257 rob +P. Please check local laws before ordering. This is a .243 Ruger M77 with a tang safety, red recoil pad, and a Redfield 3x9. The .257 is the original dual purpose caliber. While there are certainly faster .25s—like the .25-06 Remington and .257 Weatherby Magnum —the .257 Roberts is one of those sweet-shooting, yet effective cartridges that can handle appropriate game species out to sane hunting ranges. I have a Winchester model 70 Pre64 257 roberts. The 257 Roberts cartridge has a very interesting and curious history. Since then I have shot the correct ammo through it and it does good, it will … We are more than happy to discuss bullet performance relating to our 257 Roberts ammunition and bullet selection for your rifle. 257 Roberts, 257 Roberts Improved (28 deg),, 257 Roberts Ackley Improved (40 deg) ... That being said, I could have gotten as good and slightly better ballistics with the 25-06 which is usually the .25 caliber the AI is compared to. Can be a great field rifle with 26-28" barrels or all around carry gun with 22-24" barrel. The light 87grain Hornady SP at 3825fps is intended strictly for varmints while the 100 grain Interlock at 3602fps and 117 grain RNSP Interlock … I inherited from my grandfather his pre-64 Mod 70 in .257 Roberts. I'm really only going to shoot 115-120 grain. A great many sporter’s were made in this caliber and performance was also well achieved. Factory Ammunition Weatherby currently list five loadings for the .257 featuring Hornady, Nosler and Barnes projectiles. 25-06 - Best of the .25's IMO for the average hunter for ammo cost and availability. It shoots 1-inch groups at 100 yards, with about any 100-grain bullet. The .257 Roberts, also known as .257 Bob, is a medium-powered .25 caliber cartridge.It has been described as the best compromise between the low recoil and flat trajectory of smaller calibers such as the .22 and 6mm, and the strong energy but not the strong recoil of larger popular hunting calibers, such as the 7mm family and the popular .30-06. Basic components for the .257 Roberts are generally easy to find. Gunpowder Charge Weight Velocity m/s Velocity fps; Norma MRP: Max 47.6 Min 45.0: 851 808: 2792 2651 Description.257 Roberts. Due to safety considerations and legal/regulatory reasons, Ammunition may not be returned. $37.99. SF 257 Roberts +P 117 gr. The .257 Roberts a medium powered .25 caliber cartridge known affectionately as the Bob. 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