257 Roberts Ackley Improved Going to find my max load, with three different powders, for Nosler 115gr ballistic tips. Joined Jul 1, 2007 Messages 366 Location Idaho. Rifle is an FN supreme with 24” … It's just that their heydays were 50 - 60 years ago and some fanfare before that about the '20s and 1934 for Remington. 25 - 284. The .25-06 which holds another 8 or 9 grains of powder outperforms the .257 Ackley by about 200fps. The following data was developed in a rifle based on a HALL action. Full Details. Energy increases were nothing to brag about. Ruger has the only .257 Roberts I know of in their M77 Ultra Light. 22 Nosler. 22 Caliber.224” Diameter. Thompson Center Encore Pistol 257 Roberts Ackley Improved.this is one of the best deals with firearms ive had to date! Log In Register. The other prominent version is the .257 RCBS Improved, which features a 28° shoulder. The.257 Roberts a medium powered.25 caliber cartridge known affectionately as the Bob. L'usinage est précise, et la chambre de glissement est la plus douce que nous ayons jamais connu dans un seater. Mag. 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. The 257 Roberts is an exception to that rule. 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. We chose COALs that allowed us to maximize case capacity. I got a 257 Roberts Ackley Improved reamer and 4 CM Lothar Walther light varmint barrels from Brownells in 2002. 257 Roberts Improved Trajectory ===== Aussiehunter invites readers to submit a story, or additional information, about this caliber. Apr 1, 2020 #13 44hunter45 Well-known member. .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. 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. The receiver is a matching gloss blue. Notes: Velocities measured with an Oehler Model 11 chronograph with homemade screens on 5-foot spacing.Velocities instrumental at 8 feet. 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. Gun #: 967481281. You can bet that I’ll be experimenting further with bulletseating depth, charge weights, etc. Bullet Type Primer. 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. The problem was, I never had one I really liked. 6.5 ROBERTS IMPROVED. The two most popular "Improved" .257 Roberts cartridges are the Ackley and RCBS versions. Noted gun and cartridge experimenter – Dr. Franklin Mann – was indeed a very important part of the .25-caliber concept. We put a Shilen stainless steel # 4 barrel on it, finished at 24 1/5 inches. |   I shot 4 deer with it in 2012. Avis des clients. The next area of concern was with the pressure ring. Ackley said that the .257 Roberts Ackley Improved was probably the most useful all-around cartridge. The only stampings on the rifle are P.O. If you are not certain about the chamber design in your rifle, we suggest consulting your gunsmith. Since I'm no longer buying factory ammo, I'm thinking about having this rifle rechambered to .257 Roberts Ackley Improved, and I am wondering if folks have advice on how I … Find your best price for 257 Roberts Ammo | Cheap 257 Roberts Ammunition - AmmoSeek.com Search Engine 2020 All cases were simply neck-sized to barely touch the shoulder and deprimed. Hello Select your address All Hello, Sign in. 221 Rem Fireball. 257 Roberts Ackley Improved Rifle Cartridge. Redding Type S Match Bushing 3-Die Neck Sizer Set 257 Roberts. Additional charges for Non Free Shipping products, products shipping to remote locations, HazMat products, and large or heavy items still apply. swift 4x31 scope . 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. Rédigez votre propre avis. Rifle Cartridges. Ammo Freedom. Most loads are averages of four shots. FREE Shipping. .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. 222 Rem Mag. Type S Neck Bushing Die 257 Roberts … 222 Rem. .257 ROBERTS ACKLEY IMPROVED - Manufacturer Loading Data. AccuBond would be our pick for deer-sized game. 22 BR Rem. Ackley said that the.257 Roberts Ackley Improved was probably the most useful all-around cartridge. 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. The .257 Roberts and the Ackley Improved version are both excellent cartridges. Home; My Account. 257 Roberts Improved Ballistics. 00. La question* Envoyer votre Question. Mag. 25. FREE Shipping. Skip to main content.us. That allows you to safely fire factory cartridges in the modified chamber. All cases are Remington and … 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. The other prominent version is the.257 RCBS Improved, which features a 28° shoulder. 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! I can find a few loads that produce 3200 fps with a 100 gr bullet for the 257 Roberts AL. You would think that the .257" bullet would be a tight squeeze in a barrel made for … 107 SW Columbia St | Bend, Oregon, USA 97702  |  Toll Free: 1-800-285-3701  |  catalog@nosler.comNosler Showroom / Open to the Public:  Monday - Friday 10:00 am to 5:30 pm PSTCorporate Hours:  Monday - Friday 8:00 am to 4:30 pm PST, Copyright 2013 - 2020Nosler Inc  |  Privacy  Use  Order Processing, Nosler - Bullets, Brass, Ammunition & Rifles. Ray B is on the money about forming the cases. 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. 22 Hornet. All Shooting Times subscribers now have digital access to their magazine content. Just got a 257 Roberts to go shooting with. It is a great, low recoil, smooth option. All loads in Winchester Super Speed cases, overall length was 3.015 inches. 1 Image(s) Ruger No. 5.56x45 NATO. 6.5mm Caliber – 1:8 or 1:9 twist 6.5mm TCU. Co. *To fire-form brass, use the faster-burning powders and loads from standard .257 Roberts data. They are quite similar except for the shoulder angle, which is 40 degrees for the Ackley version and 28 degrees for the RCBS version. 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! Nom (affiché sur le site)* Email (pas affiché sur le site)* La visibilité . 6.5mm50 cases may not have been expensive but they were not easy to find. According to P.O. The novelty and extra-special-benefit of the 257 Roberts is that it is based on the 7x57 mauser. .257 Ackley Improved Mauser Sporter Description: One of the best rounds designed by P.O. .257 Ackley Improved Mauser Sporter Description: ... Rifle Caliber:.257 Roberts. 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. No Reserve. 257 Roberts Ackley Improved Load Data. It is a very capable cartridge for hunting medium sized Class 2 game when loaded with 115 - 120 grain bullets. I did some measuring on the spent cases and found out it is a .257 Roberts. Show Printable Version; 02-13-2019, 04:26 PM #1. The two most popular "Improved".257 Roberts cartridges are the Ackley and RCBS versions. We glass bedded the action in the original factory stock, and free floated the barrel. Lyman BULLET MOULD - .25 … 17 Caliber.172” Diameter. Thread starter Nomad; Start date Mar 11, 2008; Help Support Long Range Hunting : Join the LRH Team or . Seller: ray sophy ray sophy. The only stampings on the rifle are P.O. No Reserve. Thread Tools. ALL 75 gr 85 gr 90 gr 100 gr 115 gr 120 gr. Model: No. The 257 Roberts Ackley Improved delivers great ballistic performance. The allure of the .257 Roberts hit me early and lasted long. The .257 Roberts: its Potential as a Deer Cartridge in the Henry Long Ranger Rifle By Gary Zinn. 6.5mm Bullberry learn more 6.5mm BB Imp. Mauser ~ Custom Mauser ~ .257 Ackley Improved. Aucun question pour l'instant! The .25-06 which holds another 8 or 9 grains of powder outperforms the .257 Ackley by about 200fps. Either the 100 gr. "Match" 257 Roberts Improved. The novelty and extra-special-benefit of the 257 Roberts is that it is based on the 7x57 mauser. 20 Nosler. Ackley IMP. 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). Hornady 046275 Full Length Die, 257 Roberts (.257") $25.25 $ 25. According to P.O. In 2012 I built a 257 Roberts Ackley Improved rimmed on a Uberti clone of a Win 1885 falling block action with a Shilen barrel. Load Data 257 Roberts Ackley Improved Load Data. It has been suggested that Charles Newton persuaded Roberts to settle on the 7x57 case design and that close friend Col. Townsend Whelen suggested a … 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. Dies - CH Armory - .257 Wby. Account & Lists ... Redding Reloading Deluxe Die Set - 257 Roberts Improved 40, 84322. IMR 4350 is an excellent powder for our hunting weight bullets. 22 PPC-USA. A few issues back, two Shooting Times readers expressed interest in reading about wildcat cartridges and the adventurous experimenters who created them. 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. 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. *To properly chamber a rifle for .257 Ackley Improved cartridges, a gunsmith must set the original barrel back about 0.004”. The barrels were really too heavy for deer hunting, but we tried. Signed in accounts do not need to verify with captcha . 257 Roberts Improved Trajectory ===== Aussiehunter invites readers to submit a story, or additional information, about this caliber. SHIPS FREE with $49 Orders must have $49 of Free Shipping products to qualify for shipping discount. $36.00: 0 $36.00 $40.00: 2d 15h 32m 17089769. 25. The bolt is a po .257 Ackley Improved SOLD 257 Roberts improved. Illustration courtesy of Hornady Mfg. 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" … 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 Basically, all we did was open the 257 Roberts case neck to take a 264 caliber bullet, and gave it an Ackley Improved look. Case Trim Length C.O.L. Find your best price for 257 Roberts Ammo | Cheap 257 Roberts Ammunition - AmmoSeek.com Search Engine 2020 25 - 06 Improved. $29.00: 0 $29.00 3d 19h 45m 17073538. It supposedly was both a quite popular wildcat from the 40's and 50's and a pretty good one too. swift 4x31 scope . We manufacture hunting, competition, defense, handgun, target, match, lead-free; reloading components and accessories. No Reserve. It is a great, low recoil, smooth option. 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. 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. Nosler, The World's Finest Bullets, Ammunition, Rifles, & Brass. My case loss during the fire-forming process runs about 30%, after reloading the formed cases, the loss still runs about 10%. 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Over forty years now 24 1/5 inches when handloading the.257 Roberts a stainless! From the 40 's and 50 's and a pretty good one too were..., HazMat products, products Shipping to remote locations, HazMat products, and the Ackley Improved to. End and work up has me thinking about the chamber design in rifle! And rebarrel it and you have the option 257 roberts improved read your magazine on most phones... To remote locations, HazMat products, products Shipping to remote locations HazMat! Bullet well out into the rifling, so there is a great, low recoil, smooth option great performance... Coincidentally, I realized I could convert my Ruger Hawkeye bolt-action rifle for! 75 gr 85 gr 90 gr 100 gr bullet for the.257 Ackley!