Get SPECIAL OFFER and cheap Price for 257 Roberts Rifle Reviews And Ar 15 Hunting Rifle Reviews. ), 275 yard KPS = 16.9 (Energy = 1292 ft. The rifle was a Winchester XTR Featherweight that became available through a strange set of circumstances. I don't think the .257 will ever make a strong re birth. 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. 257 Roberts could do very well with a 24" barrel for a lot of reasons. That is well beyond the MPBR of the load. Hopefully, this process will become clear after we look at some data. Note that the EKR of the .243 Win. Evaluating the killing power of a hunting bullet must be a more sophisticated exercise than simply comparing the muzzle velocities of different cartridge/load combinations. (Not quite the same range, but very flat shooting.) Loaded with 87 grain and lighter bullets, it serves well for dispatching large varmints and small predators. This is a standard 100 grain .243 Winchester factory load at a MV of 2960 f.p.s. Any advantage the 243 has is only on paper. (The .243 was offered in the Winchester Model 70 and other fine rifles, while the .244 was offered in the clunky Remington Model 722.) Note that MV is estimated for a 20 inch barrel, not the 24 inch test barrel used to derive published factory load ballistics. load falls 25 yards short of its MPBR. 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. I read down the energy column of the table until I came to the energy value closest to 1339 ft. lbs. 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. I am a lifetime deer hunter and have used bolt, lever and pump action rifles. My example is a Federal Premium .243 Winchester load with a 100 grain soft point spitzer bullet. Fellow SIG Fans: Has the P320 Drop Test Scandal Soured You On SIG? (22 inch bbl. To my knowledge, the only currently available .257 Roberts production rifle is the Kimber 84M Hunter bolt gun. I do this because I do not endorse shooting at game animals at ranges beyond the MPBR of the load in question. My understanding of bullet terminal performance is that impact energy, sectional density and frontal area are all quite important to terminal performance. (20 inch barrel), ME 1943 ft. Whenever any of these variables change, the KPS number changes proportionally. The 257 Roberts cartridge has a very interesting and curious history. The .257 was designed to run in a bolt gun, and any receiver that was designed for the 7x57mm Mauser will handle the .257 Roberts perfectly. Note that the HITS calculator uses 100 yard impact velocity as an input variable. Bullet velocity is not neglected, because velocity is the most important factor in calculating kinetic energy. All I will say is that anyone who has a .257 Roberts rifle of early vintage should have a competent gunsmith check it out before shooting +P ammo. If nothing else, it would have saved a lot of later confusion. .257 Load #1: Nosler Custom, 115 gr. I feel this even more strongly after making a detailed examination of the performance and capabilities of the cartridge. First, like others in the hunting fraternity, the rifle was the main draw. The .257 Roberts is a low recoiling, mild powered cartridge. At the Orvis flagship store in Manchester, Vermont, I found a brochure at the counter highlighting the rifle. Remember, this is from rifles with 20 inch barrels. SST bullet, BC .390, MV 2845 f.p.s. Fortunately, there is a reasonably straightforward way to do this. (22 inch barrel), ME 2162 ft. ), 100 yard KPS = 23.2 (Energy = 1771 ft. The point is that KPS and Effective Killing Range can be very useful tools for shooters who want to evaluate the killing performance of different cartridges and loads. Simply put, the .257 Roberts +P is simply the original commercial cartridge loaded to higher pressure (50,000 CUP), which reloaders with strong rifles had been doing all along. : Doubletap 100 gr. lbs. Shipped in a hard case. Velocity is important to the extent that it imparts kinetic energy to a bullet of given size and weight. The .257 Roberts: its Potential as a Deer Cartridge in the Henry Long Ranger Rifle. ), 265 yard KPS = 16.2 (Energy = 1203 ft. The .257 Roberts is a better deer cartridge than the .243 Winchester. Nosler Partition bullet, BC .391, MV 2700 f.p.s. The EKR of the load above is again at the MPBR range (265 yards), because the KPS value of 15.9 at 265 yards is greater than the baseline KPS of 15. I started with the baseline KPS for the .30-30 Winchester, reasoning that a KPS that is adequate for one deer cartridge/load should work for a different cartridge/load combination. I am only stating what the numbers show. I do use the +P WW brass. Despite using lighter bullets in factory loads, the 257 Roberts has been called an ideal cartridge for deer, antelope, black bear, sheep, goats, or long-range varmint hunting. The result means that the KPS of the load in question will be equal to 15.0 at the range where the energy of the bullet falls to 1339 ft. lbs. Thus, 180 yards is the Effective Killing Range of this load. Assuming a field ready weight (rifle, scope, sling and cartridge load) of 8.5 pounds, the recoil of the Long Ranger rifle would fall between 9.0 and 10.0 ft. These cartridges were highly touted by Warren Page, the Shooting Editor at Field & Stream magazine, and appeared to be ballistically superior to the .257 Roberts. guarantee I put a full-size 2.5-10X 50 mm Zeiss Victory HT with 30 mm tube on the rifle. Pre 64 Model 70 Winchester Rifles For Sale And Remington Model It has an even more nostalgic Redfield scope mounted on it. Though in some circles the 257 Roberts may be considered an obsolete cartridge overshadowed by several other cartridges, several times over past decades the Roberts has experienced a resurgence of interest. Although, as stated previously, Remington no longer makes a .257 Roberts, you can still find them in the model 760 at gun shows. This was 1346 ft. lbs. Firearms experimenter Ned H. Roberts created what was to become the .257 Roberts commercial cartridge during the mid-1920s. For instance, between 100 and 175 yards, the energy of the 150 grain .30-30 bullet decreases by 27.4 percent, and the KPS decreases by the same percentage (allowing for small variations due to rounding). What if .243 Winchester hunting loads with different bullet weights are considered? It was created by necking down the 7×57 Mauser case to the 257 bullet size. Finding a rifle in the Roberts might take some doing, but the search would be worth it. The downrange data are needed to do hunting capability index calculations. Understand that the few commercial cartridge brands and loads currently available are loaded to pressures approaching the +P limit and modern rifles can handle those pressures without difficulty. load detailed above is a very strong one. 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 The .257 Roberts was designed in the 1920s when wildcatter Ned Roberts started to do experiments on the .257 caliber cartridges. Hunters, in turn, would need to be convinced that the .257 Roberts cartridge delivers performance in the field that surpasses the .243 Winchester, which is already being offered in the Long Ranger rifle. The Roberts .25 wildcat cartridge did some nice things and became a popular wildcat, so Remington standardized it in 1934. I used two-piece mounts, fairly light, but in order to give the rifle its best chance to meet its sub-m.o.a. The procedure for determining the EKR of a particular cartridge and load is fairly simple and is most easily explained by an example. (The cross-sectional area of a .257 inch diameter bullet is 0.0519 sq. This decision to spec the cartridge for a moderate pressure limit caused it to come to grief a quarter century later. (20 inch barrel), ME 1862 ft. Based on personal inspection and range testing, Chuck wrote the following summary assessment of the rifle: "The Long Ranger is an ideal woods rifle, as it has a fast, smooth, rack and pinion action with a six lug, front locking, rotary bolt. My own nostalgic 257 Roberts was chambered in the 1983 Remington Classic Model 700 rifle. Having used both the 257 Roberts and the 243 for deer, I would choose the Roberts in a heartbeat over the 243. The 257 What? of energy at 100 yards. Performance of modern .257 Roberts factory loads. I realize that setting a KPS of 15 as a baseline power standard for the .30-30 load is a judgment call, but I am comfortable with it. Remington went on to offer this chambering in the Model 722 bolt action and the Model 760 pump action. (All three of the .257 Roberts loads have KPS = 15 ranges that are longer than their MPBR distances.). Too many other calibers available that exceed the performance of the .257. .257 Load #3: Federal Vital-Shok, 120 gr. The biggest confusion, and most important issue, was whether +P cartridges could be fired safely in rifles built before the new ammunition came on the market. If (and only if) that is the case then the barrel is short (20") and the contour is very thin*. However, it was not until I was introduced to the .257 Weatherby that my idea of what a quarter bore should be about. ), 100 yard KPS = 20.4 (Energy = 1826 ft. The 100 yard HITS score for the strongest .243 Win. ), 200 yard KPS = 18.4 (Energy = 1360 ft. HITS scores at 100 yards for the .257 loads are 718 (Load #1), 773 (Load #2) and 772 (Load #3). The EKR of the load above is at the MPBR range (265 yards), because the KPS value of 15.9 at 265 yards is greater than the baseline KPS of 15 and I never recommend shooting at a game animal beyond the MPBR of the cartridge and load. The 257 Roberts cartridge has a very interesting and curious history. It is a very capable cartridge for hunting medium sized Class 2 game when loaded with 115 - 120 grain bullets. I surmise that development of the +P cartridge variant was an attempt to boost performance of the cartridge to velocity levels that would look better against the fast .243s. (SD is the ratio of a bullet's weight in pounds to the square of its diameter in inches.). The commercial Remington version of the .257 Roberts returned to the original 7x57mm Mauser 20-degree, 45-minute shoulder angle (a good move) and dispensed with the neck trim. Remington was the first to commercialize the 257 Roberts in 1934 by chambering their Model 30 bolt action rifle for it. lbs. classification system uses an online calculator to produce a numerical HITS score for rifle cartridge loads. Find your best price for 257 Roberts Ammo | Cheap 257 Roberts Ammunition - AmmoSeek.com Search Engine 2020 -Editor). Calling the output variable of the formula "KPS" (Killing Power Score), for a given load the formula is: KPS at y yards = (Impact Energy at y yards) x (sectional density x frontal area), or simply: For instance, consider the following .30-30 Winchester factory load: Hornady 150 gr. Down range, bullet velocity is not the sole, or most important, factor that determines terminal performance. lbs. That said, I will simply refer to the cartridge and rifles chambered for it as ".257 Roberts" hereafter. 22lr Winchester Rifle And 257 Roberts Rifle Manufacturers Reviews : If you're looking for 22lr Winchester Rifle And 257 Roberts Rifle Manufacturers. lbs. If you searching to test 22 Marlin Rifle Magazines And 257 Roberts Rifle Manufacturers price. For a given load, the formula is: KPS at y yards = (Impact Energy at y yards) x (sectional density x cross-sectional area), or simply: My judgment is that an adequate KPS value for hunting deer and similar Class 2 game is KPS 15. From the trajectory table, I recorded muzzle energy and energy at 100 yards and other relevant distances. ), SD .226, A = .0745 sq. Loads with 95 and 90 grain bullets have EKRs of 205 and 175 yards, respectively. Close up of Pronghorn Antelope on VZ 24 Mauser floorplate. The Guns and Shooting Online Rifle Cartridge Killing Power Formula uses downrange impact energy, bullet sectional density and bullet cross sectional area as input variables. The point is that a modern lever action rifle chambered for the Roberts would be a unique option for hunters, one that I believe would be well received. As it turned out, the .257 Roberts was chosen because I had obtained a rifle about a year earlier. This load has a MPBR of some 280 yards, but its EKR (KPS = 15) is only about 180 yards. Gear Review: NcStar / Vism Universal Rear sight tool, GLOCK Spills Details on the New Gen5 Pistols, Watch: DIY Guided Knife Sharpener (With Plans), 5 Photos of Firing Pin Repair on a Colt Single Action Clone, Watch: Making the Mark II Ammo Can Rocket Stove, Second Amendment Foundation: No Open Carry at Political Rallies, Please, Southeast Texas Preppers: Get Your Storm Preps Ready, Advice to New Women Shooters, From Women Shooters, Watch: Putting an Antique Grindstone Back to Work, Watch: Mad Genius Breaks Car; Rides Out on Bike Made From Its Parts, Kimber Goes High Tech with Hunting Pistol. It is truly a hunting rifle i.e. These are built on the long action action so you reload to the magic 3" Roberts. E = KPS / (SD x A) = 15.0 / .0112 = 1339 (ft. Talk to an expert. ), 200 yard KPS = 17.7 (Energy = 1371 ft. Thus, the 100 yard KPS of this load is: This is merely an example, as KPS can be calculated for any range. 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. It has the benefit of giving me a standard against which I can evaluate dependable killing ranges of other .30-30 loads, as well as other cartridge/load combinations that might be used for hunting deer and other Class 2 game. If you searching to evaluate 257 Roberts Remington Ammo And 260 Rifle Ammo For Sale price. (The EKR and baseline KPS concepts are explained further in the Appendix, below.). If you walked into your favorite local gun shop or hunting supply store and did not find 257 Roberts ammo on the shelf, I would not be shocked either. lbs., depending on the load in question. in. lbs. Swift Scirocco II, BC .384, MV 3120 f.p.s. The ballistic performance based off four grain types for velocity are … ), .243 Win: Federal 100 gr. lbs. Those who reflect on the decline of the .257 Roberts as a significant heavy varmint and light big game cartridge almost always credit (or blame) the .243 Winchester. lbs., MPBR = 265 yards (zero at 225 yards). The .257 Roberts was used in a newly introduced Model 70 Featherweight and later, the .25/06 Remington got the nod more often than not. These are mild recoil levels that would be conducive to comfortable, accurate shooting with the rifle and caliber. 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 adjusted this to a more normal 22 inch barrel length for a .243 hunting rifle. However, the comparison is not quite that simple. I believe this would be a great rifle/cartridge package for hunting deer, pronghorn and similar game. The .257 was very popular in the '50's and in Inlet, N.Y. a guy killed a 400+ bear just outside of town with one shot from a .257. ), 275 yd. I did some estimates of recoil with the heavy hunting loads I have featured. Therefore, KPS numbers generated from different data inputs (E, SD, or A) are directly comparable. The preceding history/background is necessary to understand the distinction between the original .257 Roberts cartridge and its later variant called the ".257 Roberts +P." (20 inch bbl. The effective killing range numbers for these two loads suggest that they are equal. Compare prices for Ruger 22 Long Rifle Automatic Pistol Serial Numbers And Ruger 257 Roberts Rifle For Sale You can order Ruger 22 Long Rifle Automatic Pistol S This load produces 1232 ft. lbs. In the 1980s more power was loaded in this cartridge, when ammo makers brought out +P loadings. The KPS formula combines these variables in a direct, easy to calculate way. Rifle only $800 with Leupold mounts and a multicoated Leupold M8 6x42mm scope $950. .243 Win. 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Nostalgia 257 roberts rifle reviews i found a brochure at the outset that the.257..