Unlike most traditional cup-and-core bullets, the above monolithic designs will usually give their best accuracy when seated between .040 inch to .090 inch off the lands. Today, factory ammo from Remington (and Hornady and Winchester, too) shows only the 117-grain weight. The best evidence of this is recent legislation. the 7mm Mauser case necked down to .25 caliber complete with a 15-degree What if .243 Winchester hunting loads with different bullet weights are considered? .257 Load #3: Federal Vital-Shok, 120 gr. It may not be as Maybe it was concern over chamber variations in custom guns. 5.0. Hodgdon However, it can also be used for larger game such as deer and elk. I'd Google up guard screw torque for M77 UL and see what they say. Performance of modern .257 Roberts factory loads. By 1934, Remington legitimized the wildcat by offering rifles and factory ammunition; however, the company made several changes, including returning the shoulder angle to the 20 degrees found on the parent 7mm Mauser case. Browning/USRAC also did a limited run of the Model 70 XTR in .257 Roberts. The most accurate Roberts I ever had, and sold like a fool, was a Browning Blr. There is no need to magnumize the Roberts, even when broke at 3.25 pounds right out of the box. (I adjusted this to a more normal 22 inch barrel length for a .243 hunting rifle. This cartridge is at its best when loaded Loads with 95 and 90 grain bullets have EKRs of 205 and 175 yards, respectively. The .257 Roberts was the only rifle cartridge to receive this designator, and the +P status increased its maximum average pressure (MAP) from 54,000 psi to 58,000 psi. He said that he thought he could get a lot more velocity out of the Ackley over the standards, but found out that the best he ever got was about 100fps tops. Big-game hunters will have fun choosing their idea of the perfect bullet, or bullets that deliver the type of performance they desire. classification system uses an online calculator to produce a numerical HITS score for rifle cartridge loads. the information in the brochure " is still not ready for publication." ), .243 Win: Federal 100 gr. .257 Roberts Ballistics The 257 Roberts is based on the 25-20 Winchester case, which itself is derived from the 32-20 WCF case. Detachable, steel sling swivel studs and a contoured, effective recoil pad are standard equipment. Discussing this issue in detail is outside the scope of this article. " Cheapest velocity in the world comes from a long barrel and I sure do like them. The Roberts offers no real handloading challenges. Looking back at my records, the handload used in Montana included Browning did the same in its BLRs. . See The G&S Online Rifle Cartridge Killing Power Formula: Implications and Applications and Determining the Effective Killing Range of Rifle Cartridges for fuller discussion of the killing power formula and effective killing range concepts. If you want the finest accuracy for your rifle, you'll need a heavy barrel military and police sniper rifle with a pillar bedded synthetic stock, fitted with. Recently, the renewed . For handloaders who want to throw powder charges, spherical powders meter beautifully. better under a .25-caliber bullet if the case capacity matched closely Fi. Reasonable shipping cost. Buy Lyman Neck Expander M Die for 25-06 Rem & 257 Roberts NEW! Copyright 2017 by Gary Zinn and/or chuckhawks.com. Ruger's No. The .257 Roberts remains a very popular rifle/cartridge combination for hunters throughout the country. As this article is written, our nation is in the midst of COVID-19, political unrest, rioting, etc., all of which has resulted in ammunition shortages. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. As to the Ruger Hawkeye I own. experimenting that existing powders of the day would perform much How far can you accurately shoot a 243? Pet Loads and Handloader are registered trademarks of Wolfe Publishing Company. The .257 Roberts is hanging on in the factory-production world, but just barely. My uncle had a custom built that he used for varmints. Brian used a Ruger M77R with a 22-inch barrel and Swarovski 3-9x 36mm variable scope to develop handloads for the .257 Roberts. The Roberts .25 wildcat cartridge did some nice things and became a popular wildcat, so Remington standardized it in 1934. Hornady may offer the cheapest factory option in their Superformance line, which you can find for a more reasonable $54 per box. The popularity and dual-purpose nature of the .250 Savage and the .257 Roberts were usurped in 1955 by the .243 Winchester and the .244 Remington (later renamed 6mm Remington). The hottest .243 Winchester factory load I was able to identify for the article The .243 Winchester: Its Capabilities as a Deer Cartridge specs out as follows. .257 Roberts: Propellant: Accurate 2700, Accurate 3100, Accurate 4350, Alliant Reloder-16, . I've had 3 different Ruger 77's in 257 Roberts and all have shot really well. produces about 17 ft.-lbs. some time. As a matter of note, SST bullet, BC .390, MV 2845 f.p.s. Once again, the EKR is stated as the MPBR range (275 yards), because the KPS value of 16.9 at 275 yards is greater than the baseline KPS of 15. velocity was increased by roughly 130 fps and 100 fps, respectively. Smaller calibers like the 6mm usually boast higher ballistic coefficients and sectional densities while shooting comparably weighted bullets. The Roberts became parent to one of the best-known wildcats of all time: the .257 Roberts Ackley Improved. Shipping speed. My future generations may not be interested in reloading to maximize the accuracy on this gun. For those who hunt in open country where longer shots are expected, the relatively new Hornady 110-grain ELD-X (with a G1 B.C. The 257 Roberts is a great little cartridge and with the 110 gr. The remaining (bullet pointed) lines summarize the results. The .243 Win. load, detailed above, is 694. Have two in the house now. I also noted the zero distance of the load. Accurate description. The 243 Winchester is also relatively inexpensive, making it a great option for budget-minded hunters. At Subscribe and Read More Or Login Previous Article: .357 Remington Maximum Next Article: In The Black The solid top receiver comes with Weaver type scope bases already mounted at the factory, which eliminates the need for a front sight that can catch on brush and branches. To my knowledge, the only currently available .257 Roberts production rifle is the Kimber 84M Hunter bolt gun. pump it up to 3,300 fps, with the same 200-yard zero drop at 300 yards In discussions about the Roberts, the one theme I duties, I use Winchester Large Rifle primers that give excellent .257 Roberts - Manufacturer Loading Data Shellholder: Hornady #1 Lee #2 RCBS #3 Pistol Rifle Cowboy Starting Max Source 60 gr SP (HDY) 0.257" Powder: Benchmark (Hodgdon) Primer: REM 9 Case: REM Trim Length: 2.223" C.O.L. Meanwhile, although I declared the EKR of the .257 Roberts load to be equal to its MPBR of 275 yards; the KPS of the .257 load is 13% greater than the .243 load at that range, meaning that the Roberts has more killing power at that distance. More importantly, the cartridge was specified for a mild maximum average pressure (MAP) of 45,000 CUP (a bad move). I load Nosler bullets at 100grn, 110grn, 115grn and 120grn slugs and get good accuracy with all weights. fps and zero the rifle for 200 yards, bullet drop at 300 yards is only The formula uses downrange impact energy, bullet sectional density and bullet cross-sectional area to calculate the killing power of hunting loads. For comparison, the .30-06 has a MAP of 60,000 psi. summer woodchucks to bigger game out West, I found this cartridge There is a wide selection of .25-caliber premium big-game hunting bullets that work well in the .257 Roberts. Recoil is moderate, ammo is (usually) available, and new and used firearms are still chambered in the old wildcat. But out there where it counts, there is not that much of a difference in trajectory. of Hercules Powder Company. Chuck Hawks reports that a 100-grain .257 exiting the barrel at 3,000 fps produces only 9.3 ft-lbs. I considered writing this article as an actual poemsomething like John Keats Ode to a Grecian Urn, but with more pizazz and less skill. Load data for 37 loads in caliber .257 Roberts with .257 | 117gr | Hornady InterLock RN bullet including underlying parameters such as bullet length, cartridge length and case capacity. 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. I mentioned earlier that the .257 Roberts has a reputation for being a mild shooting cartridge. The rifle was a Winchester XTR Featherweight that became available For example, Nosler lists the 100-grain Ballistic Tip at 3,000 fps, but from the 22-inch Ruger barrel actual velocity was 2,912 fps. Have a friend, bought a ruger.. in 257 roberts. The .257 Roberts was designed in the 1920s when wildcatter Ned Roberts started to do experiments on the .257 caliber cartridges. The next load is the hottest Roberts factory load of which I am aware, driving a 117 grain bullet at an estimated 2845 f.p.s. Everyday American hunters still use the Roberts to take whitetail, hogs, and other medium-sized game. According to the history Ive read, Roberts worked with F.J. Sage on The current SAAMI spec for the .257 Roberts Maximum Average Pressure (MAP) is 54,000 psi. Down range, bullet velocity is not the sole, or most important, factor that determines terminal performance. I wound up with more than a dozen powders to test, Straight-wall cartridges are surging in the whitetail world. This was 1346 ft. lbs. Walther's new Performance Duty Pistol is ready for both concealed carry and conventional service situations. to me several months later and was used successfully on antelope the For hunters wanting deep penetration, the Barnes 80- and 100-grain Tipped Triple Shock X-Bullet and Hornady 90-grain GMX are proven choices. Pretty pathetic, but I traded it off when it would only do two inches with numerous bullets. casually mentioned the Roberts was on the way out. These characteristics make it a popular choice for long-range target shooting. Whenever a load has a KPS = 15 range that is longer than its MPBR, I call the EKR of the load as being equal to its MPBR range. lbs., MPBR = 265 yards (Zero at 225 yards). Group sizes and velocities are listed in the table. The does a great job on deer - it holds together very well at the high velocities possible with the AI case and I have found it to be very accurate. Kimber offers their Hunter line chambered in .257 Roberts, and Ruger still makes their Model No. What is the twist of your friend's 257 Roberts? (20 inch bbl. animal over the length of a football field. The .257 Roberts cartridge does not deserve to be shoved into obscurity. It was freaky accurate with Winchester 117g round nose loads. Model 30 bolt action. Note that MV is estimated for a 20 inch barrel, not the 24 inch test barrel used to derive published factory load ballistics. A friend of mine has had 3 different .257 Roberts, 2 standard and 1 Ackley version. I had messed up. Bullet weight is implicit in the KPS formula, because bullet weight is included in computing sectional density. The sizing E = KPS / (SD x A) = 15.0 / .0112 = 1339 (ft. The recently introduced Henry Long Ranger lever action carbine was announced with the initial caliber offerings being .223 Remington, .243 Winchester and .308 Winchester, with more calibers promised in the future. (22 inch barrel). 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