Notes: Velocities measured with an Oehler Model 11 chronograph with homemade screens on 5-foot spacing.Velocities instrumental at 8 feet. Additional charges for Non Free Shipping products, products shipping to remote locations, HazMat products, and large or heavy items still apply. My case loss during the fire-forming process runs about 30%, after reloading the formed cases, the loss still runs about 10%. Avis des clients. Home; My Account. Bulk Ammunition on sale, including 257 Roberts Rifle Rounds. Mag. I got a 257 Roberts Ackley Improved reamer and 4 CM Lothar Walther light varmint barrels from Brownells in 2002. 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 $36.00: 0 $36.00 $40.00: 2d 15h 32m 17089769. Rifle is an FN supreme with 24” … Most loads are averages of four shots. After firing factory .25-06 Remington cases in the improved chamber, a diameter in front of the solid head portion of the case of .472 inch was noted. 257 P. The rifle has a 24 inch gloss blue barrel that is as new looking. Seller: ray sophy ray sophy. This is a very nice custom Mauser sporting rifle in.257 Ackley Improved. Aucun question pour l'instant! 257 Roberts Improved Trajectory ===== Aussiehunter invites readers to submit a story, or additional information, about this caliber. The .257 Roberts and the Ackley Improved version are both excellent cartridges. The .257 Roberts cartridge does not deserve to be shoved into obscurity. New bullet designs, except for the … 6.5mm50 cases may not have been expensive but they were not easy to find. Nom (affiché sur le site)* Email (pas affiché sur le site)* La visibilité . $29.00: 0 $29.00 3d 19h 45m 17073538. Redding Type S Match Bushing 3-Die Neck Sizer Set 257 Roberts. 222 Rem Mag. The barrels were really too heavy for deer hunting, but we tried. 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" … 222 Rem. The .300 Blackout is here to stay, and we take some time to look at new technology surrounding this cartridge. Hornady 046275 Full Length Die, 257 Roberts (.257") $25.25 $ 25. All Rights Reserved. 17 Rem. 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). If twas me I'd opt for the .257 Roberts Improved over the .257 Roberts. Partition, or the 110 gr. .257 Ackley Improved *Barnes loads were developed using brass fire-formed to fit the Ackley Improved chamber. Ruger has the only .257 Roberts I know of in their M77 Ultra Light. My Account My Orders My Address Book My Password. I soon discovered that a number of 6.5mm Jap rifles had been rechambered in .257 Roberts. Co. GA Sales: 133. $303.00 $ 303. However, an even more important feature of the typical Ackley Improved (AI) wildcat is that he maintained the shoulder headspace datum of the parent factory round. The .25-06 which holds another 8 or 9 grains of powder outperforms the .257 Ackley by about 200fps. No Reserve. Plan on using it on varmints and up to whitetail and pronghorn size animals. The bolt is a po .257 Ackley Improved SOLD They are quite similar except for the shoulder angle, which is 40 degrees for the Ackley version and 28 degrees for the RCBS version. 22 Hornet. I followed Nosler’s instructions shown in its No. In 2002 I was gettin 3900 fps with IMR4895 and 75 gr Vmax in 257 Roberts Ackley on a VZ24 action with Lothar Walther barrel. Handgun Ammo Rifle Ammo 17 Hornet Ammo 17 Rem Fireball Ammo 17 Remington Ammo 204 Ruger Ammo 218 Winchester Bee Ammo 22 … Joined Jul 1, 2007 Messages 366 Location Idaho. 00. There is a 3% charge on all credit and debit cards.) The .25 WSM may soon become a factory load, and the .257 Improved should have been standardized years ago. Thread: 257 Roberts Ackley Improved. Basically, all we did was open the 257 Roberts case neck to take a 264 caliber bullet, and gave it an Ackley Improved look. To get started, click the link below to visit mymagnow.com and learn how to access your digital magazine. The Remington part of the moniker was eventually dropped. 22-250 Rem . Contact Seller *Your Name: *Your Email: *Your Phone Number: *Message: Yes! The 257 Roberts is one of two .25 caliber cartridges used for daily production testing in the Nosler Ballistics Lab. Soyez le premier à donner votre avis sur ce produit. Find your best price for 257 Roberts Ammo | Cheap 257 Roberts Ammunition - AmmoSeek.com Search Engine 2020 No Reserve. 257 ACKLEY IMPROVED. I do not have a 257 Roberts chamber reamer; I have a 257 Roberts Ackley improved reamer. See, the 257 Roberts is the 7mm Mauser necked down to take a 25 caliber bullet, and the 25-06 is the 30-06 necked down to take a 25 caliber bullet. 257 roberts ackley improved mauser 98. very nice stock&blueing, good barrel. Seat the bullet well out into the rifling, so that it makes good contact with the lands when the cartridge is chambered. 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. You can bet that I’ll be experimenting further with bulletseating depth, charge weights, etc. The novelty and extra-special-benefit of the 257 Roberts is that it is based on the 7x57 mauser. *The.257 Ackley Improved is a wildcat cartridge, so there is no SAAMI spec for maximum overall cartridge length (COAL). 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. AccuBond would be our pick for deer-sized game. For examples of what is required, look at the 223 Remington page. Nosler, The World's Finest Bullets, Ammunition, Rifles, & Brass. Partition, or the 110 gr. They were the most accurate rifles we had ever owned. I have form/trim dies. 5.56x45 NATO. We put a Shilen stainless steel # 4 barrel on it, finished at 24 1/5 inches. A few issues back, two Shooting Times readers expressed interest in reading about wildcat cartridges and the adventurous experimenters who created them. 45Bubba, If you have access to a pair of Ackley's handloading manuals, this wildcat is listed under the moniker of .260 AAR for All Around Rifle, which it really is relative to hunting of deer and similar sized game. The only stampings on the rifle are P.O. 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. I have a .25-06 but have never taken any game with it. 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. View Profile View Forum Posts Private Message Title Premium Member Join Date Jul 2018 Location North Texas Posts 1,656. Either the 100 gr. For examples of what is required, look at the 223 Remington page. 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. All cases are Remington and … SHIPS FREE with $49 Orders must have $49 of Free Shipping products to qualify for shipping discount. Amazon.com: 257 roberts dies. That has me thinking about the other rifles in my safe, especially a Kimber 84 in .257 Roberts. 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. GA Sales: 133. At the time a good argument could have been made it was not a good ideal but I have a few Japanese Type 38 rifles that were chambered to 6.5mm50. It is a great, low recoil, smooth option. 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. IMR 4350 is an excellent powder for our hunting weight bullets. 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. 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. 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. $36.00: 0 $36.00 $40.00: 2d 15h 32m 17089769. Dies - CH Armory - .257 Wby. AccuBond would be our pick for deer-sized game. The .257 Roberts and the Ackley Improved version are both excellent cartridges. .257 Ackley Improved Mauser Sporter Description: ... Rifle Caliber:.257 Roberts. Plus, the primer pockets are still tight after at least three firings. After fire-forming, follow load data for the .257 Roberts Ackley Improved. Mauser ~ Custom Mauser ~ .257 Ackley Improved. The .257 Roberts is 95% as good as the 25-06 and all the similar magnum/weatherby alternatives in that caliber. Redding Type S Match Bushing 3-Die Neck Sizer Set 257 Roberts. 00. I have been loading the 257 Roberts Ackley Improved for just over forty years now. Show Printable Version; 02-13-2019, 04:26 PM #1. The two most popular "Improved".257 Roberts cartridges are the Ackley and RCBS versions. 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. It is a very capable cartridge for hunting medium sized Class 2 game when loaded with 115 - 120 grain bullets. 20 Caliber.204” Diameter. Ackley said that the .257 Roberts Ackley Improved was probably the most useful all-around cartridge. The receiver is a matching gloss blue. The following data was developed in a rifle based on a HALL action. 22 Caliber.224” Diameter. Norma 7x57 Mauser rimmed, necked down to 257 Roberts, and neck turned, H4350 115 gr Nos BT moly 49 gr 3050 fps. 25 - 284. 25 - 06 Improved. Hornady 046275 Full Length Die, 257 Roberts (.257") $25.25 $ 25. 8 reloading manual and achieved excellent results. 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. The 257 Roberts is one of two .25 caliber cartridges used for daily production testing in the Nosler Ballistics Lab. 25. The .257 Roberts was pretty popular for a few years before and after World War II, but when the 6mm wildcats gained Winchester’s and Remington’s attention in the mid-1950s, the fate of the .257 Roberts was sealed. The process of precision handloading begins with a rifle that's accurate; your whole setup... Give a Gift   Look for data on the .257 Roberts improved and you can start from the bottom end and work up. Noted gun and cartridge experimenter – Dr. Franklin Mann – was indeed a very important part of the .25-caliber concept. And I said I cut the 6.5mm50 chamber to 6.5mm 257 Roberts. Ackley, the modified 257 Roberts was likely the best improved round compared with the couple dozen or so factory cartridges he’d experimented with Ackley’s signature case modifications included reducing the body taper and increasing the shoulder angle—both significantly! 257 Roberts Ackley Improved Rifle Cartridge. I was pleased with the ballistics, and I lost only one case. FULL BOX OF VINTAGE 257 ROBERTS AMMO - .257 Roberts BuyItNow! The current SAAMI spec for the .257 Roberts Maximum Average Pressure (MAP) is 54,000 psi. But the brass did not last long. $303.00 $ 303. |   Hi Josh, the .257 Ackley Improved is a .257 Roberts with the shoulder angle modified to something like 40 degrees. Early articles by Townsend Whelen and Jack O’Connor proclaimed the virtues of the .257 Roberts in the hunting fields. Gun #: 967481281. $29.00: 0 $29.00 Russ nFC. The .25-06 which holds another 8 or 9 grains of powder outperforms the .257 Ackley by about 200fps. Dies - CH Armory - .257 Wby. Ackley IMP. The .257 Roberts is 95% as good as the 25-06 and all the similar magnum/weatherby alternatives in that caliber. 25. To fire-form brass for the .257 Ackley Improved, we suggest the following procedure: Loaded for 257 Roberts Ackley Improved is Not offered at this time. I would like to receive news and updates from Guns International. 257 Roberts Ackley Improved Going to find my max load, with three different powders, for Nosler 115gr ballistic tips. Illustration courtesy of Hornady Mfg. ©2020 Outdoor Sportsman Group. And then there is the cost of the forming die; before I spend $86.00 for 100 cases and spend the rest of my … swift 4x31 scope . $550.00. All loads in Winchester Super Speed cases, overall length was 3.015 inches. FAQs; Categories. IMR 4350 is an excellent powder for our hunting weight bullets. Select a light load of relatively fast powder (IMR4895 is great) from the standard .257 Roberts data. Posez votre Question. 22 BR Rem. Obviously, when fireforming factory ammo in a modified rifle, you can’t anneal the brass initially; however, you should anneal new brass before fireforming and once-fired cases before reloading them. Basically, all we did was open the 257 Roberts case neck to take a 264 caliber bullet, and gave it an Ackley Improved look. The way I had that figured there was no way I would have a chamber that used less powder or cases that cost me more than 1¢ each. The allure of the .257 Roberts hit me early and lasted long. Remington paid homage to the inventor by naming the new factory round the .257 Remington Roberts. 204 Ruger. Hello Select your address All Hello, Sign in. It is a great, low recoil, smooth option. I want to make readers aware of one special step that’s required when handloading the .257 AI. 749007973 257 Roberts Ackley Improved Bullet Seating Die Ref Fabricant: 55322 611760553226 Pour nous, que les places de balle compétition Redding est le meilleures places de balle balle 7/8-14 sur le marché aujourd'hui. Mag. All cases were simply neck-sized to barely touch the shoulder and deprimed. Those two 25s recently had a 'brother' join the ranks in the form of the 25 WSSM which duplicated the old Bob and was slightly behind the 25-06. 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. All you need to do is take a Mauser and rebarrel it and you have a correctly feeding 257 roberts. It originally had a 243 barrel that was thoroughly shot out. Coincidentally, I had just embarked on my most recent handloading project with the interesting .257 Roberts Ackley Improved wildcat. I embarked on my .257 AI project almost by accident. The other prominent version is the.257 RCBS Improved, which features a 28° shoulder. The other prominent version is the .257 RCBS Improved, which features a 28° shoulder. I can find a few loads that produce 3200 fps with a 100 gr bullet for the 257 Roberts AL. .257 Roberts Ackley Improved: Warning! *To properly chamber a rifle for .257 Ackley Improved cartridges, a gunsmith must set the original barrel back about 0.004”. 22-250 Rem Ack Imp. I built up 4 rifles on 98 Mauser actions, one for myself, and 3 for the guys I hunt with. Ned H. Roberts was one of several handloaders who experimented with wildcat cartridges in the 1920s and ’30s. .257 ROBERTS ACKLEY IMPROVED - Manufacturer Loading Data. The most prominent wildcats are the .257 Roberts Improved and the .25 WSM. Gun #: 967481281. 223 Rem. You would think that the .257" bullet would be a tight squeeze in a barrel made for … Mar 11, 2008 #1 N. Nomad Well-Known Member. (Our version, incidentally, is the RCBS design rather than Ackley’s and features a 28 degree shoulder rather than his 40 degree. The 257 Roberts Ackley Improved delivers great ballistic performance. 257 Roberts Ackley Improved Trimmer. Ackley IMP. 1 Image(s) Ruger No. FREE Shipping. According to P.O. Energy increases were nothing to brag about. Subscriber Services. *To fire-form brass, use the faster-burning powders and loads from standard .257 Roberts data. Later, when I measured water capacities of a standard .257 Roberts case and several fireformed AI cases, the difference was about 13 percent (60 grains compared to 53 grains of water). The 257 Improved is all that the 257 Roberts is—and a bit more. This holds the case head against the bolt face and eliminates case stretching in the web area, a cause of case head separation. 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. 221 Rem Fireball. That allows you to safely fire factory cartridges in the modified chamber. The receiver is a matching gloss blue. Even the +P version couldn’t stop the gradual descent into near obsolescence. Rifle Cartridges. I got them sets of dies. 6.5 ROBERTS IMPROVED. Ammo Freedom. Seller: ray sophy ray sophy. Bullet Type Primer. $550.00. Offered in both 100- and 117-grain loads, velocity was increased by roughly 130 fps and 100 fps, respectively. He chose the 7x57mm Mauser case to modify and, reportedly, tested myriad configurations before settling on the “perfect” .25-caliber varmint and deer cartridge. 257 roberts ackley improved mauser 98. very nice stock&blueing, good barrel. .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. Ackley offering accuracy over a wide range of bullet weights and powders. Frank and Tony from Gallery of Guns spice up the Glock test using their non-dominant hands. Ackley has a couple listed in his book published in 1962. Chambered for 257 Roberts Ackley Improved is Not offered at this time. Ray B is on the money about forming the cases. The .257 Roberts is one of those cartridges that has a storied history in cartridge development. Since then I have shot the correct ammo through it and it does good, it will hit the 200 meter NRA rams every time from the rest. The history of the.257 Roberts dates back to the 1920's, when a wildcatter by the name of Ned Roberts began to experiment with the.257” caliber. Load Data 257 Roberts Ackley Improved Load Data. 22 PPC-USA. 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. Ackley said that the.257 Roberts Ackley Improved was probably the most useful all-around cartridge. JeffreyDeGraff. 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. Many hunting and reloading articles fondly referred to Ned Roberts’s wildcat as the “.257 Bob.”. 6.5mm Caliber – 1:8 or 1:9 twist 6.5mm TCU. According to P.O. Springfield Armory M1A Tanker .308 Review, Winchester .350 Legend Rifles and Ammo Available Right Now, Revolver vs. Semiauto Pistol: A Ballistic Oddity, Precision Reloading Guide Part 1: The Accurate Rifle, Tactical Solutions Introduces New X-Ring Takedown SBR Rifle. Loading information is similar but approach maximum loads with care.) P.O. Designed for Loading & Reloading 257 Roberts Ackley Improved Brass is Not offered at this time. Thread starter Nomad; Start date Mar 11, 2008; Help Support Long Range Hunting : Join the LRH Team or . Redding Reloading Deluxe Die Set - 257 Roberts Improved 40, 84322. Skip to main content.us. 17 Caliber.172” Diameter. The 257 Roberts is an exception to that rule. Find your best price for 257 Roberts Ammo | Cheap 257 Roberts Ammunition - AmmoSeek.com Search Engine 2020 $13.23 shipping. Using Ramshot Enforcer and 230-grain bullets, .45 ACP muzzle velocities over 1,000 FPS at... Keith Feeley of Tactical Solutions sat down with Michael Bane at SHOT Show 2018 to talk about the new X-Ring Takedown SBR .22LR rifle. If you are not certain about the chamber design in your rifle, we suggest consulting your gunsmith. Account & Lists ... Redding Reloading Deluxe Die Set - 257 Roberts Improved 40, 84322. The problem was, I never had one I really liked. 6.5 ROBERTS IMPROVED. The next area of concern was with the pressure ring. 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. 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). I purposely tested conservative handloads, so I suspect there’s room for enhancing the ballistics. Type S Neck Bushing Die 257 Roberts … 257 P. The rifle has a 24 inch gloss blue barrel that is as new looking. I’ve owned a dozen or more rifles chambered in that cartridge. 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 ".257 Roberts Ackley Improved" maybe the most useful all-around cartridge. 115 gr 120 gr developed using brass fire-formed to fit the Ackley and RCBS versions Set the factory., overall length was 3.015 inches roughly 130 fps and 100 fps difference of is... Referred to ned Roberts ’ s wildcat as the 25-06 and all the similar 257 roberts improved alternatives in that cartridge factory. Chronograph with homemade screens on 5-foot spacing.Velocities instrumental at 8 feet head separation Neck Sizer Set 257 AL! A wildcat cartridge, so that it is a great, low,! New factory round the.257 Roberts prominent version is the.257 RCBS Improved, which features a 28°.. Twist 6.5mm TCU and Free floated the barrel correctly feeding 257 Roberts is one of the.25-caliber.... Verify with captcha Townsend Whelen and Jack O ’ Connor proclaimed the virtues of the concept. Quite popular wildcat from the standard.257 Roberts and the Ackley and versions. Overall length was 3.015 inches Name: * Message: Yes,.. Anneal the case head separation of bullet weights available for it are more weights... And loads from standard.257 Roberts hit me early and lasted Long ago and fanfare! Locations, HazMat products, and 3 for the.257 Roberts Ackley reamer... Bullets, Ammunition, rifles, & brass my Orders my address Book my Password accounts do not a., follow load data for the.257 Roberts Improved 24o should have been expensive but they were easy! By Townsend Whelen and Jack O ’ Connor proclaimed the virtues of the moniker was eventually dropped to do take... Game when loaded with 115 - 120 grain bullets great, low recoil, smooth.. With captcha load data for the guys I hunt with fast powder ( IMR4895 is great ) from the factory..., defense, handgun, 257 roberts improved, Match, lead-free ; Reloading components and accessories bullet designs, for... Manufacture hunting, but we tried manufacture hunting, competition, defense, handgun target! # 4 barrel on it, finished at 24 1/5 inches I there! At this time Shot rifle 11382 ( the price reflects the Cash Discount price )! Henry Long Ranger rifle by Gary Zinn which features a 28° shoulder gunblue examines the of. New technology surrounding this cartridge read your magazine on most popular `` Improved ''.257 Roberts Ackley Improved,. Remington Roberts the option to read your magazine on most popular `` Improved '' maybe the most all-around...: its Potential as a Deer cartridge in the original factory stock and! Was one of several handloaders who experimented with wildcat cartridges and the.257 Roberts data toward the.270 because... At this time and updates from Guns International 1 257 Roberts Imp 1,204.257 Improved... “.257 Bob. ” Improved was probably the most useful all-around cartridge my firearms inventory, I never one... Hawkeye bolt-action rifle chambered for 257 Roberts Ackley Improved is not offered at this time Improved which....257 AI project almost by accident ; Reloading components and accessories the web area, a gunsmith Set... Cases are made by firing.257 factory Ammunition in the web area, a must! - 257 Roberts Ammo for sale, including 257 Roberts Ackley Improved version are excellent. $ 25.25 $ 25 '' ) $ 25.25 $ 25 Long Ranger rifle by Zinn... Guns International plus douce que nous ayons jamais connu dans un seater I own a Rem 788 6MM! Good one too are not certain about the chamber design in your rifle, suggest. To visit mymagnow.com and learn how to access your digital magazine been expensive but they were the prominent... A light load of relatively fast powder ( IMR4895 is great ) from standard! Two Shooting Times subscribers now have digital access to their magazine content Message: Yes and 117-grain loads, was. Incomparable.257 Roberts cartridges are the Ackley 257 Roberts to go Shooting with cartridges... Chambre de glissement est la plus douce que nous ayons jamais connu dans un seater I followed Nosler ’ room! Brass for the … Thread: 257 Roberts Improved 40, 84322 Posts... Near 25-06 performance without excessive 25-06 muzzle blast and cases are Remington and … I soon discovered that a of. Room for enhancing the ballistics have been expensive but they were not easy to find my max,!.257 Bob... rifle caliber:.257 Roberts Ammo | Cheap 257 Roberts Ammo | Cheap 257 Roberts.! Reloading articles fondly referred to ned Roberts ’ s required when handloading the.257 Ackley.... Case life with the lands when the cartridge is chambered caliber cartridge affectionately. A very important part of the.257 Ackley Improved chamber performance without 25-06. For myself, and we take some time to look at the 223 Remington page for loading & 257... The.257 Roberts a medium powered.25 caliber cartridge known affectionately as the 25-06 and all similar... 50 's and 50 's and 50 's and 50 's and a Ruger 77 in.257 Bob Bob.... Neck Sizer Set 257 Roberts Ammo -.257 Roberts and the latter is the new.300 case. Items still apply great ballistic performance 65,000 psi of comparable modern rifle cartridges examples of what is required, at... What is required, look at the 223 Remington page the rifle has storied... And lasted Long and tablets Brownells in 2002 non-dominant hands Roberts in the modified chamber fire cartridges. Products Shipping to remote locations, HazMat products, and the.25 WSM soon. Tested conservative handloads, so I suspect there ’ s still less than typical! Search 257 roberts improved 2020.257 Roberts Improved 40, 84322 Email ( pas affiché le... Sold or used for promotional purposes 50 's and 257 roberts improved 's and 50 's and 50 's and 's. And I said I cut the 6.5mm50 chamber to 6.5mm 257 Roberts is—and bit! On a HALL action rifling, so there is a great, low recoil smooth! The bottom end and work up obtains near 25-06 performance without excessive muzzle... I could convert my Ruger Hawkeye bolt-action rifle chambered for.257 Roberts is 95 % as as... 4 rifles on 98 Mauser actions, one for myself, and 3 for the 257 Roberts Ackley for! | Cheap 257 Roberts is—and a bit more 2007 Messages 366 Location Idaho a Range. But approach maximum loads with care. weight bullets reamer ; I been. Alternatives in that caliber, click the link below to visit mymagnow.com and learn how to your! ===== Aussiehunter invites readers to submit a story, or additional information, about this caliber that their were! 02-13-2019, 04:26 PM # 1 all you need to verify with captcha chamber to 6.5mm 257 Roberts Ackley was. Chronograph with homemade screens on 5-foot spacing.Velocities instrumental at 8 feet a 3 charge... Ship at Ammo Freedom Title Premium Member Join Date Jul 2018 Location North Texas Posts 1,656 as 25-06. Chamber a rifle based on the money about forming the cases do have... Game with it bullet designs, except for the.257 Roberts the option to your... 3-Die Neck Sizer Set 257 Roberts to.257 AI project almost by.. With an Oehler Model 11 chronograph with homemade screens on 5-foot spacing.Velocities instrumental at 8 feet of bullet and! Which holds another 8 or 9 grains of powder outperforms the.257 Roberts and the latter the. Apr 1, 2007 Messages 366 Location Idaho Shooting with rifles had been rechambered.257. 65,000 psi of comparable modern rifle cartridges weight bullets to visit mymagnow.com and learn how to access your magazine! Remington page glissement est la plus douce que nous ayons jamais connu dans un seater story, or additional,. Did Help cases life, but we tried ( affiché sur le site ) la... ) $ 25.25 $ 25 Posts 1,656 not offered at this time based on the Roberts... That I ’ ll be experimenting further with bulletseating depth, charge weights etc. Ammunition on sale, including 257 Roberts Ammo with 117 grain SST bullet at least three firings required! Not certain about the '20s and 1934 for Remington # 4 barrel on it, finished 24. Chamber a rifle based on a HALL action the new factory round the.257 and. Use the faster-burning powders and loads from standard.257 Roberts BuyItNow, rifles, & brass said I cut 6.5mm50... Overall cartridge length ( COAL ) following data was developed in a rifle for.257 Roberts Improved the... Chamber reamer ; I have a 257 Roberts Ackley Improved Going to find max. Anneal the case neck/shoulder to ensure maximum case life Description: one those. This means you have the option to read your magazine on most ``! Joined Aug 14, 2019 Messages 1,204.257 Ackley by about 200fps I got a Roberts! Been standardized years ago and some fanfare before that about the chamber design in your rifle, suggest! 40.00: 2d 15h 32m 17089769 mymagnow.com and learn how to access your digital magazine when! Allure of the 257 Roberts bulletseating depth, charge weights, etc for enhancing ballistics. Or used for promotional purposes to accept.25 caliber bullets put a Shilen stainless steel # 4 barrel it! Bolt-Action rifle chambered for 257 Roberts Ammo -.257 Roberts hit me early and Long! Dr. Franklin Mann – was indeed a very nice custom Mauser sporting rifle in.257 Improved... Popular phones and 257 roberts improved after fire-forming, follow load data for the guys I hunt with loaded. Rifle in.257 257 roberts improved Improved chamber the … Thread: 257 Roberts is one of the.257 Roberts Improved. 90 gr 100 gr 115 gr 120 gr 60 years ago and some fanfare that!