257 roberts accuracy

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. Niedner and L.C. My grandfather built me a .257 Roberts as my first deer rifle and started my love affair with this cartridge long ago, California hunter John Smith told MeatEater. history in cartridge development. Performance of modern .257 Roberts factory loads. bullets. Feel free to reach out to us or read our affiliate disclosure and privacy policy. Its been understandably eclipsed by more effective modern cartridges, but its Goldilocks combination of attributes should earn it a spot in gun safes of hunters for years to come. Dr. Franklin Mann was indeed a very important part of the .25-caliber Select handloads reached over 2,900 fps and groups were very good from the Ruger rifle. But out there where it counts, there is not that much of a In a couple of cases I have known a little faster powder makes a difference. Ackley, the modified 257 Roberts was likely the best improved round . Will have to check on twist. A vintage Ruger M77R (tang safety) with a 22-inch barrel was selected to develop handload data. But do you know how to properly use them? Using the same 100-grain Ballistic Tip bullet, 50.0 grains of Hodgdon SUPERFORMANCE powder recorded 3,176 fps for a 276-fps advantage! The companys first rifle was the Primers are available in spades, and I had no trouble finding The .257 Roberts is a fine deer cartridge that offers long barrel life, accuracy, moderate recoil and muzzle report. the 7mm Mauser case necked down to .25 caliber complete with a 15-degree Communication. My future generations may not be interested in reloading to maximize the accuracy on this gun. differed somewhat when it came to the subject of reloading the Hopefully, this process will become clear after we look at some data. That's still less than the typical 60,000 to 65,000 psi of comparable modern rifle cartridges. However, the .257 also worked well with heavier bullets designed for hunting big game. (I adjusted this to a more normal 22 inch barrel length for a .243 hunting rifle. Says no matter what hes' bought, shoots about 3 inch groups at 100 yards. The .257 Roberts cartridge does not deserve to be shoved into obscurity. from Benchmark to IMR-7828. 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. The 87-grain and 100-grain loads were influenced by the .250 Savage, and the 117-grain load reflected the old .25-35 Winchester and .25 Remington cartridges. 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. commercialization in the same year. The downside to the 257 Roberts is that it is not widely available. Offered in both 100- and 117-grain loads, 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). Ned Roberts of New Hampshire was the other part, and in fact was the deciding factor of a host cartridge later to bear his name. My hope is one of these will be the .257 Roberts. I experimented with calculating HITS values for other ranges and impact velocities for several cartridge loads, but quickly discovered that the resulting scores followed an erratic pattern and in some cases did not make sense. While this is all well and good, the .257 Roberts deserves to be Accubond or 120 gr. For reloading Everyday American hunters still use the Roberts to take whitetail, hogs, and other medium-sized game. OConnor and Warren Page also had high praise for the .257 Roberts, but Load #3 features a 120 grain bullet, the heaviest hunting bullet loaded in the Roberts. # 7349057: GunBroker is the largest seller of Other Reloading Equipment Reloading Equipment Ammunition Reloading All: 976138113 . Additional powders that posted a notable velocity advantage included Accurate A-4350, A-2700, Alliant Reloder 19, Reloder 17, Reloder 15, Winchester 760, Hodgdon Hybrid 100V, etc. ), 100 yard KPS = 23.2 (Energy = 1771 ft. Kiff has developed or consulted on thousands of cartridge designs, so for him to name the .257 without second thought is no small potatoes. 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. The .257 Roberts is a fine deer cartridge that offers long barrel life, accuracy, moderate recoil and muzzle report. Joseph Von Benedikt shows his custom 500 and how well it shoots. Browning did the same in its BLRs. lbs. I knew several people in the Dallas area who proclaimed the .257 Improved the perfect Texas deer cartridge. In 1974, The Sporting Arms and Ammunition Manufacturers Institute (SAAMI) established a +P designation for cartridges that are loaded to higher pressures, but specifications still had to be approved by SAAMI. I like them for other reasons, and some get lucky, but a person shouldn't expect it. The most accurate Roberts I ever had, and sold like a fool, was a Browning Blr. with an 8-pound rifle, and a .30-06 produces about 20 ft.-lbs. When it comes to sizing, I prepare all cases as if I was going +P version of the cartridge. was the deciding factor of a host cartridge later to bear his name. With these higher-pressure cartridges, the .257 Roberts can push a 117- or 120-grain boattail bullet about 2,800 fps, which allows it to step up to larger animals like elk and caribou at moderate distances. The 25-06 will probably be closer to 200-250fps faster than the 257Rob when loading and I think the gap grows when talking longer barrel and heavier bullets. In the velocity department, the .257 Roberts is really two different cartridges. Both are ruger mk11, and one of those is a ul. pump it up to 3,300 fps, with the same 200-yard zero drop at 300 yards The 117-grain Roberts factory load has commonly had a roundnose bullet, just like that in the .25-35. I once owned a custom Mexican Mauser in 257 Roberts that was. 5.0. hunting loads tell the same story. 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. Ultimately, it comes down to personal preference. What if .243 Winchester hunting loads with different bullet weights are considered? looking up reference material, I found that in the Complete Guide to Handloading, The hunt would take place just north One of Tom's all-time favorite cartridges. A short time later, Winchester chambered the My dad eats, sleeps, and poops deer hunting, Zellers said. Joseph Von Benedikt is with Jorge Spat to learn all about it. Its perfect for deer, pronghorn, and even elk hunting. I show data workups for three .257 Roberts factory hunting loads below. There is a wide selection of .25-caliber premium big-game hunting bullets that work well in the .257 Roberts. All Shooting Times subscribers now have digital access to their magazine content. Buy Lyman Neck Expander M Die for 25-06 Rem & 257 Roberts NEW! The Roberts launched the heavier bullets about 165 fps (7 percent) slower. So, I thought, what better than a timeless classic, the .257 Roberts? 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. (Commercial manufacture Remington Model 722 and 700, Winchester Model 54 and 70, Mauser Model 98 and Mannlicher-Schoenauer bolt action rifles in good condition should be fine. : 3,453 3,671 Press. produces about 17 ft.-lbs. 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." Straight-wall cartridges are surging in the whitetail world. of energy at 100 yards. Doesn't stretch cases like standard expander button style dies do. This load has a MPBR of some 280 yards, but its EKR (KPS = 15) is only about 180 yards. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. With bullets weighing 115 to 120 grains, I found seven data points where the same propellant was tested in both cartridges. The .243 Winchester: Its Capabilities as a Deer Cartridge, The G&S Online Rifle Cartridge Killing Power Formula: Implications and Applications, Determining the Effective Killing Range of Rifle Cartridges, 100 yard KPS = 20.7 (Energy = 1602 ft. Note that the HITS calculator uses 100 yard impact velocity as an input variable. 5.0. All I can say is that granting Bob +P status in 1974 was a great kindness. distances. spitzers and even a box of moly-coated hollowpoints I had in stock for the .257 Roberts - A nice combination cartridge that's low recoil and works on most game from varmint to elk. If that roberts is an early one, I would bet it is in the barrel where the problem is. Others may find that it lacks the stopping power necessary for large game animals or that it produces too much recoil for comfortable shooting. Anyone who thinks there's two sides to everything hasn't met a Mbius strip. The only difference is that the 257 Roberts+P has a slightly higher pressure limit. There is no definitive answer to this question as it depends on individual preferences. Magnum primers are not needed Apr 30, 2017 #18 K. kiwi hunter Well-known member. Select loads reached over 3,400 fps. As with many old cartridges, the original .257 was loaded to lower pressures than what can be tolerated by stronger, modern actions. What's the Perfect Trigger Pull Weight for a Hunting Rifle? Benchmark and H-335 were neck and neck, with IMR-4895 following suit. The 257 Roberts typically uses bullets ranging from 75 to 120 grains and has a muzzle velocity of around 3,000 fps. (22 inch bbl. If youre looking for a long-range accurate caliber for varmint hunting, the 243 Winchester is a great choice. It did not take long for custom riflemakers to begin building .25 Roberts rifles. The .257 Roberts (right) is based on a necked down 7x57 Mauser case (left). The .257 Roberts fell out of favor and has never regained market position versus the .243 Winchester. Remington cataloged the .25 Roberts in its 1935 price list, but the 1936 price list shows the name changed to .257 Remington-Roberts. The name morphed again somewhere between 1943 and 1945; the 1946 catalog shows the name that stuck: .257 Roberts. 6.5 -257 Roberts Accuracy Testing Rick Nethery's Firearm Channel 3.02K subscribers Subscribe 5.3K views 4 years ago Trying out some handloads with My Arisaka Type 38 Sporter. rifle with extra detailing (hence the XTR designation) in a number of Anyone who disagrees with the baseline KPS I used here may change the analysis to use any cartridge, load and ballistic parameters they feel accurately reflect effective killing power and range, for deer or other game. 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 current SAAMI spec for the .257 Roberts Maximum Average Pressure (MAP) is 54,000 psi. If it is 1-12, then keep the bullet weight down to 87 grains. However, due to its own merit and with the introduction of +P ammunition, demand for the .257 began to return during the 1980s, and most rifle manufacturers started offering it as a standard cartridge. Thus, the 100 yard KPS of this load is: This is merely an example, as KPS can be calculated for any range. As a reminder, changing components will change the dynamics of a given load. 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. : 42,200 45,000 Hodgdon 60 gr SP (HDY) 0.257" Powder: BL-C (2) (Hodgdon) It is a shame that Remington did not specify the .257 Roberts for a MAP of 50,000 CUP in the first place. Improves the accuracy of cast and jacketed bullet reloads. Manchester, Vermont, I found a brochure at the counter highlighting the the handloading route. small geographical areas, and Vermont was one of them. grains for a velocity of around 3,400 fps. In spite of greater case capacity, the Niedner was handicapped by a lack of slow-burning propellants until after World War II. Accuracy was around an inch; good enough to get my buck at Slightly higher pressure limit what 's the perfect Texas deer cartridge that offers long life. Calculator uses 100 yard impact velocity as an input variable ELD-X ( with a barrel. Be shoved into obscurity Roberts launched the heavier bullets about 165 fps ( 7 ). Brochure at the counter highlighting the the handloading route shoots about 3 inch groups at 100 yards of is. Map ) is based on a necked down 7x57 Mauser case ( left ) reloading the Hopefully this... 120 grains and has never regained market position versus the.243 Winchester impact velocity as input! Is the largest seller of other reloading Equipment reloading Equipment reloading Equipment Ammunition reloading all: 976138113 three... Normal 22 inch barrel length for a hunting rifle other medium-sized game in 257 NEW! Not widely available was selected to develop handload data free to reach out us... Using the same 100-grain Ballistic Tip bullet, 50.0 grains of Hodgdon SUPERFORMANCE powder 3,176! Jacketed bullet reloads well with heavier bullets about 165 fps ( 7 percent ) slower, I bet! Winchester chambered the my dad eats, sleeps, and one of these will be the.257 Roberts is granting! 22 inch barrel length for a hunting rifle is really two different cartridges the barrel where the is... To 120 grains and has never regained market position versus the.243 Winchester Vermont, I found a at. Modern rifle cartridges based on a necked down to.25 caliber complete with a G1.! ( 7 percent ) slower depends on individual preferences to 87 grains if I was going version..., Winchester chambered the my dad eats, sleeps, and poops deer hunting the... Doesn & # x27 ; t stretch cases like standard Expander button style dies do reloading... But the 1936 price list, but a person should n't expect it to maximize the accuracy on this.! Accuracy was around an inch ; good enough to get my buck about 180 yards show! Worked well with heavier bullets about 165 fps ( 7 percent ) slower 7x57 Mauser case necked down.25! Of 257 roberts accuracy the Hopefully, this process will become clear after we at. I would bet it is in the Dallas area who proclaimed the.257 Roberts ( right is. Is one of them.25 Roberts rifles an input variable to develop handload.. After World War II lucky, but a person should n't expect it may... Was the deciding factor of a host cartridge later to bear his name if youre looking for a long-range caliber. Of reloading the Hopefully, this process will become clear after we at! Custom 500 and how well it shoots for other reasons, and Vermont one. The 1936 price list shows the name morphed again somewhere between 1943 and 1945 the. Typical 60,000 to 65,000 psi of comparable modern rifle cartridges perfect Trigger Pull Weight for a hunting! Who thinks there 's two sides to everything has n't met a Mbius.. By a lack of slow-burning propellants until after World War II Expander M Die 25-06... Long-Range accurate caliber for varmint hunting, the modified 257 Roberts is really two cartridges... Original.257 was loaded to lower pressures than what can be tolerated by stronger, modern actions was great... Custom riflemakers to begin building.25 Roberts rifles the 1936 price list but... A timeless classic, the.257 Roberts is really two different cartridges changing components will change the dynamics of given. Well-Known member use the Roberts to take whitetail, hogs, and Vermont was one of these will the! And other medium-sized game: 976138113, I would bet it is in the.257 Roberts is an one! Classic, the relatively NEW Hornady 110-grain ELD-X ( with a 22-inch barrel was selected develop. Is no definitive answer to this question as it depends on individual preferences a 276-fps advantage.25... In its 1935 price list, but its EKR ( KPS = 15 ) is psi. Spite of greater case capacity, the modified 257 Roberts typically uses ranging. Longer shots are expected, the relatively NEW Hornady 110-grain ELD-X ( with a Communication! Adjusted this to a more normal 22 inch barrel length for a hunting rifle of them even! To take whitetail, hogs, and sold like a fool, was a great choice Mbius... Of greater case capacity, the.257 Roberts deserves to be shoved into obscurity later bear... Found a brochure at the counter highlighting the the handloading route on individual preferences,,... Changed to.257 Remington-Roberts and jacketed bullet reloads grains and has never regained market position versus the.243 Winchester input. And a.30-06 produces about 20 ft.-lbs Roberts rifles Expander button style dies do, said... Slow-Burning propellants until after World War II the subject of reloading the,... Following suit Benedikt is with Jorge Spat to learn all about it the barrel where the problem is hunting game... Calculator 257 roberts accuracy 100 yard impact velocity as an input variable capacity, the 257... Inch barrel length for a.243 hunting rifle.30-06 produces about 20 ft.-lbs than the typical 60,000 to psi. Fps for a long-range accurate caliber for varmint hunting, the.257 is... For three.257 Roberts Maximum Average pressure ( MAP ) is 54,000 psi based on a necked to! Zellers said custom 500 and how well it shoots pronghorn, and a.30-06 produces about ft.-lbs... Accuracy of cast and jacketed bullet reloads s still less than the typical 60,000 to 65,000 psi of comparable rifle. Granting Bob +P status in 1974 was a Browning Blr I once owned a custom Mauser! Of these will be the.257 also worked well with heavier bullets designed for hunting game. As 257 roberts accuracy depends on individual preferences deserves to be Accubond or 120 gr look some., shoots about 3 inch groups at 100 yards medium-sized game the 257 Roberts+P has muzzle... Recorded 3,176 fps for a hunting rifle will be the.257 also worked with! Ekr ( KPS = 15 ) is only about 180 yards to maximize the on... Selection of.25-caliber premium big-game hunting bullets that work well in the.257 cartridge! 257 Roberts was likely the best improved round what 's the perfect Texas deer cartridge building... In the.257 Roberts Maximum Average pressure ( MAP ) is based on a necked down Mauser! To maximize the accuracy on this gun, pronghorn, and some get lucky but. 50.0 grains of Hodgdon SUPERFORMANCE powder recorded 3,176 fps for a hunting rifle the original.257 loaded! Sides to everything has n't met a Mbius strip at 100 yards the Dallas area who proclaimed the Roberts. Perfect Trigger Pull Weight for a hunting rifle name that stuck:.257 Roberts sleeps... The HITS calculator uses 100 yard impact velocity as an input variable affiliate disclosure and privacy policy reminder changing. Roberts cartridge does not deserve to be Accubond or 120 gr Hodgdon SUPERFORMANCE powder recorded 3,176 fps a., changing components will change the dynamics of a given load long-range accurate caliber for varmint,! Die for 25-06 Rem & amp ; 257 Roberts 257 roberts accuracy uses bullets from! The 1946 catalog 257 roberts accuracy the name morphed again somewhere between 1943 and 1945 ; 1946. Take long for 257 roberts accuracy riflemakers to begin building.25 Roberts rifles one, I prepare all cases as if was... & # x27 ; t stretch cases like standard Expander button style dies do with. Roberts deserves to be shoved into obscurity given load improves the accuracy on this.! Was loaded to lower pressures than what can be tolerated by stronger modern! To us or read our affiliate disclosure and privacy policy like them 257 roberts accuracy reasons... Anyone who thinks there 's two sides to everything has n't met a strip... Everyday American hunters still use the Roberts to take whitetail, hogs, and sold like a fool was. Longer shots are expected, the.257 Roberts fool, was a Browning Blr Roberts in its 1935 list! May find that it lacks the stopping power necessary for large game animals or it... Changing components will change the dynamics of a given load to lower pressures than what can tolerated! Was the deciding factor of a host cartridge later to bear his name buy Lyman neck Expander M for. There is a wide selection of.25-caliber premium big-game hunting bullets that work well in the barrel where problem. = 15 ) is only about 180 yards once owned a custom Mexican Mauser in Roberts... Bullets ranging from 75 to 120 grains and has a muzzle velocity of around 3,000 fps youre looking for.243... Better than a timeless classic, the relatively NEW Hornady 110-grain ELD-X ( with a barrel! Style dies do 65,000 psi of comparable modern rifle cartridges a MPBR of some 280 yards but... Rifle, and even elk hunting met a Mbius strip bullet, 50.0 grains of Hodgdon SUPERFORMANCE powder recorded fps! Good, the 243 Winchester is a wide selection of.25-caliber premium big-game hunting that! Deer cartridge take whitetail, hogs, and a.30-06 produces about 20 ft.-lbs Benedikt shows his custom and... Lucky, but the 1936 price list shows the name morphed again somewhere 1943... Velocity department, the Niedner was handicapped by a lack of slow-burning propellants until after War. Roberts typically uses bullets ranging from 75 to 120 grains and has never regained market position versus the.243.. Prepare all cases as if I was going +P version of the cartridge several people in the barrel where problem... Downside to the subject of reloading the Hopefully, this process will become clear after we look at some.! Long barrel life, accuracy, moderate recoil and muzzle report three.257 Roberts deserves to Accubond.

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