Ammo Freedom. Subscriber Services. I soon discovered that a number of 6.5mm Jap rifles had been rechambered in .257 Roberts. 6.5mm50 cases may not have been expensive but they were not easy to find. Redding Type S Match Bushing 3-Die Neck Sizer Set 257 Roberts. But the brass did not last long. And I said I cut the 6.5mm50 chamber to 6.5mm 257 Roberts. 222 Rem Mag. *The.257 Ackley Improved is a wildcat cartridge, so there is no SAAMI spec for maximum overall cartridge length (COAL). According to P.O. GA Sales: 133. All cases are Remington and … Ackley IMP. 257 Roberts Improved Trajectory ===== Aussiehunter invites readers to submit a story, or additional information, about this caliber. You can bet that I’ll be experimenting further with bulletseating depth, charge weights, etc. Obtains near 25-06 performance without excessive 25-06 muzzle blast and cases are made by firing .257 factory ammunition in the improved chamber. After fire-forming, follow load data for the .257 Roberts Ackley Improved. Handgun Ammo Rifle Ammo 17 Hornet Ammo 17 Rem Fireball Ammo 17 Remington Ammo 204 Ruger Ammo 218 Winchester Bee Ammo 22 … 257 P. The rifle has a 24 inch gloss blue barrel that is as new looking. Mag. If you are not certain about the chamber design in your rifle, we suggest consulting your gunsmith. .257 Roberts *Load data for this cartridge was tested at the standard SAAMI pressure level—not the higher +P pressure levels listed in some manuals. Minimum Maximum Minimum AA 2700 42.5 46.5 IMR 4350 43.0 2984 47.0 3267 100 H4350 41.0 2953 45.0 3198 92 Hunter 44.5 3080 48.5 3314 94 RL 19 45.0 3008 49.0 3275 101 VIT N560 45.5 2953 50.0 3278 100 Bullet Weight: 100 gr Case Trim Length: 2.223" … 17 Caliber.172” Diameter. $13.23 shipping. Find your best price for 257 Roberts Ammo | Cheap 257 Roberts Ammunition - AmmoSeek.com Search Engine 2020 Coincidentally, I had just embarked on my most recent handloading project with the interesting .257 Roberts Ackley Improved wildcat. $29.00: 0 $29.00 3d 19h 45m 17073538. 257 Roberts Ackley Improved Trimmer. Designed for Loading & Reloading 257 Roberts Ackley Improved Brass is Not offered at this time. He chose the 7x57mm Mauser case to modify and, reportedly, tested myriad configurations before settling on the “perfect” .25-caliber varmint and deer cartridge. Never been much of an Ackley Improved fan, since the majority of them don't really offer that much more performance than their parent cartridges. Rifle is an FN supreme with 24” … I have a .25-06 but have never taken any game with it. |   The next area of concern was with the pressure ring. 257 P. The rifle has a 24 inch gloss blue barrel that is as new looking. We chose COALs that allowed us to maximize case capacity. The .257 Roberts cartridge does not deserve to be shoved into obscurity. Nobody is offering the 6mm Rem anymore as it has been superseded by the 6BR, 6mm AI and all the other takeoffs of the line..257 Roberts and the 6MM are niche calibers and getting rare. Hello Select your address All Hello, Sign in. Illustration courtesy of Hornady Mfg. 25 - 06. 257 roberts ackley improved mauser 98. very nice stock&blueing, good barrel. It has a long action, which would allow me to lengthen the chamber throat/leade so heavy-for-caliber bullets could be seated out to an extended overall length, meaning the bullet shank would occupy even less of the increased powder volume. FREE Shipping. This holds the case head against the bolt face and eliminates case stretching in the web area, a cause of case head separation. I shot 4 deer with it in 2012. The 257 Roberts Ackley Improved delivers great ballistic performance. Find your best price for 257 Roberts Ammo | Cheap 257 Roberts Ammunition - AmmoSeek.com Search Engine 2020 Co. We have 257 Roberts Improved dies for sale, from great brands like Forster, Hornady, Lee, Lyman, RCBS, and Redding Reloading Products. Joined Aug 14, 2019 Messages 1,204 The primer pockets got lose. The allure of the .257 Roberts hit me early and lasted long. New bullet designs, except for the … Find 257 Roberts Ammo for sale, in-stock and ready to ship at Ammo Freedom. 22-250 Rem Ack Imp. The barrels were really too heavy for deer hunting, but we tried. Mag. 225 Win. Either the 100 gr. I have been leaning toward the .270 Winchester because there are more bullet weights available for it. It also means you can easily fireform .257 Roberts factory brass or loaded rounds to achieve the .257 AI case shape, so you don’t need expensive forming dies or go through extensive case-forming steps. The .25-06 which holds another 8 or 9 grains of powder outperforms the .257 Ackley by about 200fps. All cases are Remington and … I built up 4 rifles on 98 Mauser actions, one for myself, and 3 for the guys I hunt with. I got a 257 Roberts Ackley Improved reamer and 4 CM Lothar Walther light varmint barrels from Brownells in 2002. *To fire-form brass, use the faster-burning powders and loads from standard .257 Roberts data. The novelty and extra-special-benefit of the 257 Roberts is that it is based on the 7x57 mauser. Loading information is similar but approach maximum loads with care.) Model: No. Anyone have experience fireforming brass for the Ackley 257 Roberts Improved cases. 20 Caliber.204” Diameter. $550.00. 250 Gibbs. Apr 1, 2020 #13 44hunter45 Well-known member. 22 Nosler. The .257 Roberts is one of those cartridges that has a storied history in cartridge development. 25. Select a light load of relatively fast powder (IMR4895 is great) from the standard .257 Roberts data. I purposely tested conservative handloads, so I suspect there’s room for enhancing the ballistics. GunBlue examines the history of the incomparable .257 Roberts. $36.00: 0 $36.00 $40.00: 2d 15h 32m 17089769. Western Cartridge Company 2 FULL BOXES IN WESTERN SUPER-X 100 GR SILVER-TIPS - .257 Roberts $100.00: 0 $100.00 3d 8h 39m 14648350. Noted gun and cartridge experimenter – Dr. Franklin Mann – was indeed a very important part of the .25-caliber concept. All Rights Reserved. This is a very nice custom Mauser sporting rifle in.257 Ackley Improved. Seller: ray sophy ray sophy. It's just that their heydays were 50 - 60 years ago and some fanfare before that about the '20s and 1934 for Remington. FULL BOX OF VINTAGE 257 ROBERTS AMMO - .257 Roberts BuyItNow! The .257 Roberts is 95% as good as the 25-06 and all the similar magnum/weatherby alternatives in that caliber. Joined Jul 1, 2007 Messages 366 Location Idaho. Plan on using it on varmints and up to whitetail and pronghorn size animals. FAQs; Categories. I want to make readers aware of one special step that’s required when handloading the .257 AI. The .257 Roberts and the Ackley Improved version are both excellent cartridges. The only stampings on the rifle are P.O. TECHNICAL INFORMATION: While there are several versions of.257 Improved, this load data is intended for use in firearms chambered for the.257 Roberts Ackley Improved (40° shoulder angle). My Account My Orders My Address Book My Password. The other prominent version is the .257 RCBS Improved, which features a 28° shoulder. A few issues back, two Shooting Times readers expressed interest in reading about wildcat cartridges and the adventurous experimenters who created them. Of course, you could have your rifle rechambered for the .25-06 Ackley which treads close on the heels of the .257 Weatherby, but I recommend having your standard Roberts long- throated which is what I did. The receiver is a matching gloss blue. Gun #: 967481281. (Our version, incidentally, is the RCBS design rather than Ackley’s and features a 28 degree shoulder rather than his 40 degree. 1 Image(s) Ruger No. That’s still less than the typical 60,000 to 65,000 psi of comparable modern rifle cartridges. 6.5 ROBERTS IMPROVED. When Remington decided to adopt it as a factory cartridge in 1934, the company made a few minor dimensional changes to preclude firing factory ammo in rifles chambered for the wildcat round. Most loads are averages of four shots. Ackley said that the .257 Roberts Ackley Improved was probably the most useful all-around cartridge. Bulk Ammunition on sale, including 257 Roberts Rifle Rounds. Ned H. Roberts was one of several handloaders who experimented with wildcat cartridges in the 1920s and ’30s. Case Trim Length C.O.L. Thread Tools. 22 PPC-USA. The .25 WSM may soon become a factory load, and the .257 Improved should have been standardized years ago. I did some measuring on the spent cases and found out it is a .257 Roberts. FREE Shipping. While thinning out my firearms inventory, I realized I could convert my Ruger Hawkeye bolt-action rifle chambered for .257 Roberts to .257 AI. L'usinage est précise, et la chambre de glissement est la plus douce que nous ayons jamais connu dans un seater. 257 roberts ackley improved mauser 98. very nice stock&blueing, good barrel. After having the rifle rechambered; picking up a set of reloading dies; gathering an adequate supply of bullets; and researching load data from Hodgdon, Sierra, Hornady, and Western, I fireformed three boxes of brass, loaded a half-dozen different handloads with the bullets seated out just short of the throat leade, and test-fired them. 22 Hornet. The 257 Roberts is one of two .25 caliber cartridges used for daily production testing in the Nosler Ballistics Lab. It supposedly was both a quite popular wildcat from the 40's and 50's and a pretty good one too. 257 Roberts cases cost be $8.00 for 100; that is 8¢ each. However, the .280 Remington is capable of developing energy nearly equal to the .30-06 Springfield, but with lighter bullets having a better ballistic coefficient. Tom Beckstrand and Neal Emery of Hornady highlight the 6MM Creedmoor ammo. I’ve owned a dozen or more rifles chambered in that cartridge. 204 Ruger. The 257 Roberts is an exception to that rule. Seller: ray sophy ray sophy. Questions sur CH4D Jeux d'Outils 257 Roberts Improved 24o. All Shooting Times subscribers now have digital access to their magazine content. The two most popular "Improved".257 Roberts cartridges are the Ackley and RCBS versions. The process of precision handloading begins with a rifle that's accurate; your whole setup... Give a Gift   12 September 2003, 16:55. If twas me I'd opt for the .257 Roberts Improved over the .257 Roberts. 22-250 Rem . Bullet Type Primer. I got them sets of dies. 17 Rem. My case loss during the fire-forming process runs about 30%, after reloading the formed cases, the loss still runs about 10%. The following data was developed in a rifle based on a HALL action. Signed in accounts do not need to verify with captcha . Notes: Velocities measured with an Oehler Model 11 chronograph with homemade screens on 5-foot spacing.Velocities instrumental at 8 feet. 257 Roberts Imp. Log In Register. JeffreyDeGraff. 257 Roberts Ackley Improved Going to find my max load, with three different powders, for Nosler 115gr ballistic tips. Dies - CH Armory - .257 Wby. Powder ALL Accurate 2700 Accurate 4350. Full Details. It originally had a 243 barrel that was thoroughly shot out. 222 Rem. Contact Seller *Your Name: *Your Email: *Your Phone Number: *Message: Yes! The current SAAMI spec for the .257 Roberts Maximum Average Pressure (MAP) is 54,000 psi. Partition, or the 110 gr. Like many .25 caliber cartridges, most have fallen by the wayside only to perk up with suggestions like yours and the advent of the 131 Blackjack bullet. The most prominent wildcats are the .257 Roberts Improved and the .25 WSM. No Reserve. Offered in both 100- and 117-grain loads, velocity was increased by roughly 130 fps and 100 fps, respectively. The .257 Roberts is 95% as good as the 25-06 and all the similar magnum/weatherby alternatives in that caliber. Seat the bullet well out into the rifling, so that it makes good contact with the lands when the cartridge is chambered. The novelty and extra-special-benefit of the 257 Roberts is that it is based on the 7x57 mauser. According to P.O. The other prominent version is the.257 RCBS Improved, which features a 28° shoulder. Find 257 Roberts Improved Reloading Dies, and 257 Roberts Improved Die Sets for sale here: Get the right 257 Roberts Improved Die or 257 Roberts Improved Die Set for your press here at Midsouth. Just got a 257 Roberts to go shooting with. One of the common improvements is called the .257 Roberts(+P) which has a SAAMI maximum pressure limit of 58,000 PSI compared to the 54,000 PSI listed for the standard .257 Roberts. Ray B is on the money about forming the cases. $303.00 $ 303. Early articles by Townsend Whelen and Jack O’Connor proclaimed the virtues of the .257 Roberts in the hunting fields. 5.56x45 NATO. No Reserve. And then there is the cost of the forming die; before I spend $86.00 for 100 cases and spend the rest of my … SHIPS FREE with $49 Orders must have $49 of Free Shipping products to qualify for shipping discount. While there are several versions of .257 Improved, this load data is intended for use in firearms chambered for the .257 Roberts Ackley Improved (40° shoulder angle). Between the .257 Imp and .25-06 there might be your 100 fps difference. Home; My Account. 257 Roberts Improved Trajectory ===== Aussiehunter invites readers to submit a story, or additional information, about this caliber. This means you have the option to read your magazine on most popular phones and tablets. Bullet seating was done with a .257 Roberts seating die. That allows you to safely fire factory cartridges in the modified chamber. Normally I would not care much, but I had to form that brass with cream of wheat: Hornady 046275 Full Length Die, 257 Roberts (.257") $25.25 $ 25. P.O. The Remington Model 700 PCR is a long-range rig built for punching paper, ringing steel, and... A unique load for the .450 Bushmaster is Hornady's new Subsonic offering. Skip to main content.us. Plus, the primer pockets are still tight after at least three firings. Nosler, The World's Finest Bullets, Ammunition, Rifles, & Brass. Back in the 1980s, a press release showed that Winchester still kept an interest in the.257 Roberts by introducing a +P version of the cartridge. Account & Lists ... Redding Reloading Deluxe Die Set - 257 Roberts Improved 40, 84322. Traduction automatique (Description - Fabricant): La « tondeuse plus belle du monde » vous permet de découper plus de cas en moins de temps - et avec moins d’effort - à l’aide de votre perceuse électrique comme source d’énergie. Gun #: 967481281. 25 - 284. Next, we pit subsonic rivals against each other before stretching the legs of this CQB round out to 600 yards from a short 9-inch barrel. Amazon.com: 257 roberts dies. "Match" 257 Roberts Improved. 6.5mm Caliber – 1:8 or 1:9 twist 6.5mm TCU. One of the common improvements is called the.257 Roberts (+P) which has a SAAMI maximum pressure limit of 58,000 PSI compared to the 54,000 PSI listed for the standard.257 Roberts. $303.00 $ 303. 20 Nosler. For examples of what is required, look at the 223 Remington page. Mauser ~ Custom Mauser ~ .257 Ackley Improved. FULL BOX OF VINTAGE 257 ROBERTS AMMO - .257 Roberts BuyItNow! The bolt is a po .257 Ackley Improved SOLD I was pleased with the ballistics, and I lost only one case. Minimum Maximum Minimum AA 2700 42.5 46.5 IMR 4350 43.0 2984 47.0 3267 100 H4350 41.0 2953 45.0 3198 92 Hunter 44.5 3080 48.5 3314 94 RL 19 45.0 3008 49.0 3275 101 VIT N560 45.5 2953 50.0 3278 100 To read your magazine on most popular phones and tablets Texas Posts 1,656 will be... For Remington 3200 fps with a.257 Roberts maximum Average Pressure ( MAP ) is 54,000 psi may... Using brass fire-formed to fit the Ackley Improved delivers great ballistic performance cartridge so! S wildcat as 257 roberts improved 25-06 and all the similar magnum/weatherby alternatives in caliber... Forum Posts Private Message Title Premium Member Join Date Jul 2018 Location North Posts! Connor proclaimed the virtues of the 257 Roberts Ackley Improved was probably the most useful cartridge. At 8 feet increased by roughly 130 fps and 100 fps difference bullet MOULD -.25 … 257 Ammo... On using it on varmints and up to whitetail and pronghorn size animals 4350 is excellent. Plus, the World 's Finest bullets, Ammunition, rifles, brass... Is that it is based on the money about forming the cases I got a 257 Roberts Ackley Mauser. Other prominent version is the.257 RCBS Improved, which features a 28° shoulder, the 's... Shooting with target, Match, lead-free ; Reloading components and accessories loading the 257 Roberts Ackley.... Who experimented with wildcat cartridges in the 1920s and ’ 30s outperforms the.257 Roberts cartridges the... Down to accept.25 caliber bullets no SAAMI spec for the.257 Roberts cartridges are the.257 Roberts Ammo 117. $ 36.00 $ 40.00: 2d 15h 32m 17089769 to the inventor naming... His Book published in 1962 +P 257 roberts improved with a MAP of 58,000 psi in the original factory,. Hunting and Reloading articles fondly referred to ned Roberts ’ s wildcat as the Bob a couple listed in Book....25-06 which holds another 8 or 9 grains of powder outperforms the.257 Roberts I know of in their Ultra! '20S and 1934 for Remington Ammo -.257 Roberts cartridges are the Ackley Improved Mauser Sporter:... Proclaimed the virtues of the 257 Roberts indeed a very capable cartridge for hunting medium Class! Very nice custom Mauser sporting rifle in.257 Bob rifle cartridges begins with a Roberts. Own a Rem 788 in 6MM and a pretty good one too my firearms inventory, realized... Date Mar 11, 2008 ; Help Support Long Range hunting: Join the LRH Team or handloaders experimented... Fondly referred to ned Roberts ’ s room for enhancing the ballistics by about 200fps we manufacture hunting,,! 24 inch gloss blue barrel that was thoroughly Shot out low recoil, smooth option and... Nice stock & blueing, good barrel to find my max load, the. The 7x57 Mauser new bullet designs, except for the.257 Roberts and the Ackley Improved was probably most! For promotional purposes blue barrel that was thoroughly Shot out extra-special-benefit of the.257 Roberts option to your. Into near obsolescence nom ( affiché sur le site ) * la visibilité Townsend Whelen and Jack ’! Is here to stay, and I lost only one case P. rifle! Address all hello, Sign in stock, and 3 for the Ackley Roberts!.257 Roberts data could convert my Ruger Hawkeye bolt-action rifle chambered for 257 Roberts Ackley Improved 2019 Messages.257. Shilen stainless steel # 4 barrel on it, finished at 24 1/5 inches 's and a 77! The 257 Roberts Ackley Improved reamer Ammunition in the Improved chamber 2008 ; Help Support Long Range hunting Join. Features a 28° shoulder do is take a Mauser and rebarrel it you. – was indeed a very nice custom Mauser sporting rifle in.257 Bob accounts do not been. Discovered that a Number of 6.5mm Jap rifles had been rechambered in.257 Roberts Ackley Improved cartridge... 32M 17089769 accurate rifles we had ever owned 257 roberts improved find a few issues back, Shooting! Frank and Tony from Gallery of Guns spice up the standard.257 Roberts BuyItNow are excellent! Chose COALs that allowed us to maximize case capacity B is on the 7x57 Mauser of their. Rebarrel it and you can Start from the 40 's and a pretty good one too.25-caliber concept heydays 50... Have never taken any game with it a Ruger 77 in.257 Ackley Improved Mauser 98. very nice Mauser! Has a 24 inch gloss blue barrel that is why I own a Rem in... Cartridges in the Improved chamber take some time to look at the 223 page... Gr bullet for the 257 Roberts is—and a bit more rifles chambered in caliber. P. the rifle has a 24 inch 257 roberts improved blue barrel that is as new looking this address will be... A 257 Roberts Ammunition - AmmoSeek.com Search Engine 2020.257 Roberts Improved and you have the option to read magazine... Its Potential as a Deer cartridge in the Improved chamber submit a story, or additional information, about caliber. I want to make readers aware of one special step that ’ s instructions shown in its no begins. Firearms inventory, I never had one I really liked Die Set 257. Name: * your Name: * Message: Yes brass is not offered at this time 1920s and 30s. 50 's and 50 's and a pretty good one too 95 % as good as the “ Bob.. ( pas affiché sur le site ) * la visibilité 100 gr bullet for the Ackley and RCBS.! A quite popular wildcat from the 40 's and 50 's and pretty. Of case head against the bolt face and eliminates case stretching in the web area, a cause case... L'Usinage est précise, et la chambre de glissement est la plus douce que ayons.:.257 Roberts Description: this is a very capable cartridge for hunting medium sized 2. And you have a correctly feeding 257 Roberts Improved 24o next area of concern with! Data on the 7x57 Mauser cases are Remington and … I soon discovered that a of. 2008 ; Help Support Long Range hunting: Join the LRH Team or noted gun cartridge! Is one of those cartridges that has a 24 inch gloss blue barrel that as!: its Potential as a Deer cartridge in the mid-1980s on all credit debit. With wildcat cartridges and the latter is the new.300 WSM case necked down to accept caliber... Fondly referred to ned Roberts ’ s still less than the typical 60,000 to 65,000 psi of modern. Sporting rifle in.257 Ackley Improved delivers great ballistic performance ned Roberts ’ s room for enhancing the,... Improved is a very nice stock & blueing, good barrel a blown-out.257 Roberts maximum Average Pressure ( ). Single Shot rifle 11382 ( the price reflects the Cash Discount price with an Model! Floated the barrel to whitetail and pronghorn size animals Ammunition on sale, including 257 Roberts Improved! The current SAAMI spec for the … Thread: 257 Roberts is that it is on! Roberts seating Die WSM case necked down to accept.25 caliber bullets and up to whitetail and pronghorn size.... Rifle for.257 Roberts Ackley Improved reamer and 4 CM Lothar Walther light varmint barrels from Brownells in 2002 I! Cases and found out it is a great, low recoil, smooth option design... Nom ( affiché sur le site ) * la visibilité is similar approach! 223 Remington page inventory, I realized I could convert my Ruger Hawkeye bolt-action rifle chambered.257! -.25 … 257 Roberts (.257 '' ) $ 25.25 $ 25 rechambered. 223 Remington page, except for the 257 Roberts.25 WSM may soon become a load... Version ; 02-13-2019, 04:26 PM # 1 to submit a story or. 6.5Mm50 cases may not have a.25-06 but have never taken any game with.. Got a 257 Roberts Improved Trajectory ===== Aussiehunter invites readers to submit a story, or additional,! In your rifle, we suggest consulting your gunsmith the 7x57 Mauser magazine on most popular phones and tablets -... Feeding 257 Roberts leaning toward the.270 Winchester because there are more weights. Without excessive 25-06 muzzle blast and cases are Remington and … I soon discovered that a Number of 6.5mm rifles! Notes: Velocities measured with an Oehler Model 11 chronograph with homemade screens on 5-foot spacing.Velocities instrumental at feet! All 75 gr 85 gr 90 gr 100 gr bullet for the 257... Custom Mauser sporting rifle in.257 Ackley by about 200fps 2008 ; Help Support Long Range hunting: Join LRH. In.257 Bob accuracy over a wide Range of bullet weights and powders heavy for Deer,. Cartridge development... redding Reloading Deluxe Die Set - 257 Roberts Ackley Improved reamer and 4 CM Lothar light. Class 2 game when loaded with 115 - 120 grain bullets the two most popular `` Improved '' maybe most! My address Book my Password 14, 2019 Messages 1,204.257 Ackley Improved reamer in development! Times readers expressed interest in reading about wildcat cartridges and the.257 Roberts data * your Phone Number: Message! The moniker was eventually dropped B is on the 7x57 Mauser new round... At new technology surrounding this cartridge and all the similar magnum/weatherby alternatives in that.... In reading about wildcat cartridges in the mid-1980s accounts do not have been but! Known affectionately as the 25-06 and all the similar magnum/weatherby alternatives in that caliber readers submit. Shilen stainless steel # 4 barrel 257 roberts improved it, finished at 24 1/5 inches,. Recent handloading project with the lands when the cartridge is chambered thinking about the other prominent version is RCBS! Aware of 257 roberts improved special step that ’ s wildcat as the “.257 Bob. ” Roberts its... 6.5Mm50 cases may not have been standardized years ago and some fanfare before that about the chamber design your... Experimenter – Dr. Franklin Mann – was indeed a very important part the... Maximum case life cases, overall length was 3.015 inches a 24 inch blue!