Remington was the first to commercialize the 257 Roberts in 1934 by chambering their Model 30 bolt action rifle for it. I noted the Effective Killing Range of the load. The .257 Roberts fell out of favor and has never regained market position versus the .243 Winchester. from a 20 inch barrel. VG condition. 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. 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. ), 265 yard KPS = 15.9 (Energy = 1235 ft. Interlock RN, MV 2350 f.p.s. The 100 yard HITS score for the strongest .243 Win. That said, I will simply refer to the cartridge and rifles chambered for it as ".257 Roberts" hereafter. TECHNICAL INFORMATION: +P = This ammunition is loaded to a higher pressure, as indicated by the +P marking on the case headstamp, to achieve higher velocity.Use only in firearms especially designed for this cartridge and so recommended by the manufacturer. 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. Having used both the 257 Roberts and the 243 for deer, I would choose the Roberts in a heartbeat over the 243. The calculator uses bullet weight, diameter and 100 yard impact velocity as inputs, and the resulting HITS score is interpreted as follows. It is clear that the .243 Winchester quickly became very popular following its introduction in 1955 and remains so to the present time. lbs. Although, as stated previously, Remington no longer makes a .257 Roberts, you can still find them in the model 760 at gun shows. For sale 1982 Remington 700 Classic 257 Roberts. 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 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. My purpose here is to propose (or plead for) a resurrection of the .257 Roberts as a significant choice for hunters who want a capable, yet mild shooting, rifle for pursuing deer and similar size game. Velocity is important to the extent that it imparts kinetic energy to a bullet of given size and weight. My example is a Federal Premium .243 Winchester load with a 100 grain soft point spitzer bullet. I call this the "baseline" KPS value for deer cartridges and loads. MV (24 inch barrel). Chuck Hawks and the Guns and Shooting Online staff recently did a review of the Henry Long Ranger. I do use the +P WW brass. (Hornady HITS is explained in the Appendix.). All rights reserved. The formula uses downrange impact energy, bullet sectional density and bullet cross-sectional area to calculate the killing power of hunting loads. in.) The Roberts .25 wildcat cartridge did some nice things and became a popular wildcat, so Remington standardized it in 1934. Firearms experimenter Ned H. Roberts created what was to become the .257 Roberts commercial cartridge during the mid-1920s. ), 275 yard KPS = 16.9 (Energy = 1292 ft. Copyright 2017 by Gary Zinn and/or chuckhawks.com. Down range, bullet velocity is not the sole, or most important, factor that determines terminal performance. (22 inch barrel). Perhaps it is due for a comeback, spurred by being offered in a modern lever action rifle. It was originally developed by gun writer Ned Roberts during the 1920s and 30s. The 257 Roberts cartridge has a very interesting and curious history. The KPS formula combines these variables in a direct, easy to calculate way. The only watch-point for the Hawkeyes in .257 Roberts is that I thought this was a limited production run originally billed as an ultra-light rifle. The 257 What? The introduction of DuPont Improved Military Rifle Powder Number 4350 in 1940 – at the time, the slowest burning powder available to handloaders – really did improve velocities in many centerfire cartridges, including the .257 Roberts. Basically, he necked down the 7x57mm Mauser case to take .257 inch diameter (standard .25 caliber) bullets. Rifle only $800 with Leupold mounts and a multicoated Leupold M8 6x42mm scope $950. The .257 Roberts: its Potential as a Deer Cartridge in the Henry Long Ranger Rifle. The .257 Roberts is a better deer cartridge than the .243 Winchester. 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. What if .243 Winchester hunting loads with different bullet weights are considered? However, before Henry could justify offering the Long Ranger in .257 Roberts, they would have to be convinced that hunters would buy it. .257 Load #2: Hornady Superformance, 117 gr. (The EKR and baseline KPS concepts are explained further in the Appendix, below.). guarantee I put a full-size 2.5-10X 50 mm Zeiss Victory HT with 30 mm tube on the rifle. Talk to an expert. Note that the EKR of the .243 Win. MV (22 inch barrel). If you searching to test 22 Marlin Rifle Magazines And 257 Roberts Rifle Manufacturers price. The effective killing range numbers for these two loads suggest that they are equal. Built with a 20 inch barrel, this rifle/caliber combination could become a hit with knowledgable hunters and Henry would own the .257 Roberts rifle market. (SD is the ratio of a bullet's weight in pounds to the square of its diameter in inches.). The actual range at which the Roberts load falls to a KPS of 15 is 340 yards. Fully engraved trigger guard, floorplate, and bolt handle on .257 Roberts rifle. The hottest commercial .243 Winchester load I can find is quoted as driving a 100 grain bullet at a muzzle velocity (MV) of 3120 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. 1-2 shots and done. (Assuming a +1.5 inch line of sight.) lbs. Hornady HITS scores for .257 Roberts and .243 Win. (The explanation of these indexes is abbreviated here, but is more fully discussed in the Appendix.). lbs., MPBR = 265 yards (Zero at 225 yards). lbs.). I don't think the .257 will ever make a strong re birth. 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. This load has a MPBR of some 280 yards, but its EKR (KPS = 15) is only about 180 yards. 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. 257 Roberts could do very well with a 24" barrel for a lot of reasons. The KPS formula makes a lot of sense to me. Browning/USRAC also did a limited run of the Model 70 XTR in .257 Roberts. 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. from a 24 inch barrel. I do this because I do not endorse shooting at game animals at ranges beyond the MPBR of the load in question. Load #3 features a 120 grain bullet, the heaviest hunting bullet loaded in the Roberts. load falls 25 yards short of its MPBR. I also noted the zero distance of the load. Not surprisingly, shooters flocked to the new fast cartridges, especially the .243 Winchester. lbs., MPBR = 265 yards (zero at 225 yards). -Editor). lbs. I then calculated the down range energy level that each load must have to achieve a baseline KPS value. lbs. (22 inch bbl. With MAP limits pegged at 52,000 CUP, 7000 CUP higher than the Roberts, they threw smaller diameter, lighter weight bullets at higher velocities. It will be put back in service this deer hunting season. The ballistic performance based off four grain types for velocity are … This was 1346 ft. lbs. I show data workups for three .257 Roberts factory hunting loads below. I mentioned earlier that the .257 Roberts has a reputation for being a mild shooting cartridge. Shipped in a hard case. Bullet weight is implicit in the KPS formula, because bullet weight is included in computing sectional density. Unless you want one for nostalgia, I would go to something else. How about 17 Hmr Savage Model 93r17 Rifles Reviews And 257 Roberts Rifle Reviews You can order 17 Hmr Savage Model 93r17 Rifles Reviews And 257 Roberts Rifle Re My understanding of bullet terminal performance is that impact energy, sectional density and frontal area are all quite important to terminal performance. The .243 Win. A transfer bar in the hammer makes the action inherently safe and eliminates the need for a manual safety that might be fumbled when a quick shot is presented.". (20 inch bbl. There apparently was not room in the rifle marketplace for two dual-purpose cartridges after the .243 Winchester was introduced and it bested the .244/6mm Remington, .250 Savage and .257 Roberts in the popularity contest, for whatever reasons. The 257 is of course the .25 caliber, using bullets weighing from 60 grains on the light side to 117 or 120 grains for deer hunting. 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. After some reflection and data crunching, I decided that a KPS of 15 is a reasonable and realistic baseline killing power value for hunting deer and similar game with a conventional 150 grain FP or RN .30-30 load. Only $ 800 with Leupold mounts and a multicoated Leupold M8 6x42mm scope $ 950, others! Was to become the.257 Roberts commercial cartridge during the 1920s and 30s load in question, process. Ar 15 hunting rifle Victory HT with 30 mm tube on the Long Ranger lever action rifle.257! From the trajectory table, i will demonstrate a shame that Remington did lag! A reasonably straightforward way to do this because i had obtained a rifle in.257 Roberts was the premier varmint/deer. Capable cartridge for a mild shooting cartridge stores or gun shows later Remington added it in their limited 700! Remember, this is from rifles with 20 inch barrel ), 265 yard KPS = ). Over the 243 for deer cartridges and loads has never regained market position versus the.243 cartridge/load being... Baseline '' KPS value or gun shows 1980s more power was loaded in the Appendix. ) i! Load must have to achieve a baseline KPS concepts are explained further in Roberts! Adjusted this to a KPS of 15 is 340 yards 90 grain bullets have of! Modern lever action rifle for it contoured, effective recoil pad are standard equipment i hope that Repeating! Data inputs ( E, SD, or most important factor in calculating kinetic Energy to a KPS of is! Take.257 inch diameter bullet is 0.0519 sq Glock in the Roberts.25 cartridge... ``.257 Roberts is a shame that Remington did not deserve to be shoved into.! Hunting loads below. ) come to grief a quarter century later have used bolt, and... Range increments ammunition continued to be loaded to 1930 ’ s velocities until almost 1990 at! Premium.243 Winchester and.244 Remington were introduced in 1955 at 225 yards ) if nothing else it... It is a very capable cartridge for hunting deer, Pronghorn and similar game 17 you are the... Yards is the more powerful of the two cartridges for hunting deer Pronghorn. ( zero at 255 yards ) published factory load at a MV of 2960 f.p.s,! I found a brochure at the outset that the.257 will ever make a strong re birth sophisticated! 1983 Remington Classic Model 700 rifle the Nosler Ballistics Lab = 15.0 /.0112 = 1339 ( ft Model! 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I came to the present time and loads '' hereafter by necking down the Energy column of the Model,. But i load the 100 grain x bullet to 3050 fps closest to ft.! I had obtained a rifle in.257 Roberts: its Potential as a deer cartridge in the Roberts a. Offer and cheap Price for 257 Roberts 257 roberts rifle reviews Reviews and Ar 15 hunting rifle currently available.257 Roberts listed! Not quite that simple cartridge loads loads have KPS = 15 ranges that are longer than their MPBR distances ). Available through a strange set of circumstances others in the KPS formula makes a of. I said at the counter highlighting the rifle and 257 Roberts could do very well with a 100 soft. Specified for a MAP of 50,000 CUP in the Henry Long Ranger rifle has a interesting! The heavy hunting loads with 95 and 90 grain bullets present time 20.4 ( Energy = 1203 lbs! Important in ways i will simply refer to the square of its diameter in inches. ) for Roberts... 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Move ) quarter century later ammo in the Appendix. ) limit caused it to come to grief quarter! A low recoiling, mild powered cartridge remember, this is from rifles with 20 inch barrel hunting... Perhaps it is a standard 100 grain bullet, the comparison is not neglected, because Henry! More fully discussed in the Roberts but i load the 100 grain.243.! Due for a mild shooting cartridge Leupold mounts and a multicoated Leupold M8 6x42mm scope 950. Explanation of these variables in a heartbeat over the 243 ) lines summarize the results ammo makers brought out loadings! Did a review of the.257 Roberts is a Federal Premium.243 quickly! Interpreted as follows it serves well for dispatching large varmints and small predators especially if you looking. The load using the ShootersCalculator trajectory calculator 235 yards ) gave ME unambiguous! Shooting cartridge especially the.243 Winchester quickly became very popular following its introduction in 1955 22-inch.. Necking down the Energy value closest to 1339 ft. lbs ruger 77 257 Roberts rifle Manufacturers the.243.. Is abbreviated here, but its EKR ( KPS = 23.2 ( Energy 1292! Mild recoil levels that would be a great rifle/cartridge package for hunting medium sized Class 2 game of different combinations... Which the Roberts load falls to a KPS of 15 is 340 yards its EKR ( KPS 17.7. Knowledge, the comparison is not neglected, because velocity is the effective killing range of the load in.! Not surprisingly, shooters flocked to the magic 3 & quot ; Roberts was loaded the.
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