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My 7-08 Improved reamer features a 30* shoulder instead of the Ackley 40*. In order to keep cases from being pushed forward against the shoulder by the firing pin strike, then stretching just above the web as the casehead is slammed back into the boltface by pressure, I have to use the false shoulder method.Apr 17, 2024 · But Ackley recognized that if he could steepen the shoulder angle of the .280 to 40 degrees in order to expand its powder capacity, he could get velocities with lighter 7mm bullets that pushed the 3,000 fps boundary, pretty spiffy for the Kennedy Administration.the rifle was removed and the rifle with its improved chamber was fired, its breech bolt was kept closed by nothing more than the weight of the finger lever bearing on it. Years later, I was reminded of Ackley's experiments when rebarreling a Marlin 336 .356 Winchester to a wildcat formed by necking down the .307 Winchester case for flatnose ...To fire-form brass for the .257 Ackley Improved, we suggest the following procedure: Start with a standard .257 Roberts cases Select a light load of relatively fast powder (IMR4895 is great) from the standard .257 Roberts data. ... I picked up a 21" 7mm TC/U barrel for my Contender, and had plans to make it into a lightweight rifle the spousal ...7mm-08 Ackley Improved. Thread starter Seedsntrees; Start date Dec 24, 2004; Dec 24, 2004 #1 S. Seedsntrees Beginner. Oct 21, 2004 123 4. ... QL for 338/06 Ackley Improved OR 338/270HGT. preacher; Jan 3, 2024; Reloading; Replies 12 Views 439. Apr 6, 2024. preacher. P. O. 7mm-08 with short barrel - to AI or not? orchemo; Dec 22, 2023;Most shooters today know him because of his “Ackley Improved” cartridge designs. But those cartridges are only the tip of the iceberg. P.O. Ackley: America’s Gunsmith is the whole story. Bonus: Full-color photo section and an exclusive never-before-printed article by P.O. Ackley. How this book will raise your firearms IQ:The 7mm-08 or AI with, 160-168's, HAS too much Recoil for, MOST Women to shoot,.. "well" ! IF, I didn't already have, a good, Elk / Deer ... as does my 338-416 Rigby Improved, but most of the forming with that is done hydraulically. So forming cases is no big deal, just wondering if there are any drawbacks to doing so? Cheers. Click ...2. .280 Ackley Improved. The .280 Ackley Improved is the ideal all-around western big game cartridge. Aram von Benedikt. Snow fell silently at 12,500 feet, dusting the pines with white. Vapor blew from a big bull elk’s nostrils, swirling with the falling snow, as he stared across my hidden meadow.333. Oct 1, 2017. #4. I had a box of 140 Berger VLD given to me . I used 140 sierra btsp last year when I had a 280 Rem and they did a great job on muley and antelope. Used all the sierra bullets up last season. Now I have a box of 140 Berger VLD and had the chamber reamed to 280 Ackley. I fireformed some brass on Friday with some corelokts I ...The all-new Nosler Model 21™ is a new rifle for the next decade. Filled with cutting edge features including a wire EDM machined receiver, nitride coated, fluted bolt, match grade stainless steel barrel, and a carbon fiber stock, the Model 21 is sure to appeal to hunters and shooters all over the country. The Model 21 is built by riflemen ...With the Ackley Improved rounds you can fire standard cartridges in the AI chamber,you lose a little velocity,the chambers have the same head space.With the AI I find I don't have to trim ... When I did a trade a year ago I got a set of dies for the Ackley 7mm.That is one reason I did the rechamber.It has worked out well for me.Not a ...Once you have enough 7-30 Waters brass, it's just a matter of selecting the proper 7mm (.284") bullet (the same diameter bullet used in the 7mm Mauser, 7mm-08, .280 Remington, .280 Ackley Improved, and 7mm Rem Mag) to use and then working up a couple different loads using a reputable reloading manual. Fortunately, there are a lot of quality ...Feb 15, 2008. #3. Sierra's reloading manual gives data on both 280 AI with 26" barrel and 7wsm with 24" barrel. For 168gr bullets both have max velocities of 2900fps but the 7wsm could do it with 7 different powders and the 280 AI with only two different powders. There's not data for 180gr but on 175's the 7wsm max was 2850fps and the 280 AI ...280 remington ackley improved 7mm remington short action ultra magnum 7mm winchester short magnum 7mm remington magnum 7mm weatherby magnum 7mm shooting times westerner 7mm remington ultra mag.308. 300 acc blackout 30-30 winchester (new!) 308 winchester 7.62x51 18″ barrel 7.62x51 20″ barrel 30-06 springfield7mm-08 AI cartridge drawing. Thread starter Justice1327; Start date Jun 27, 2021; Help Support Long Range ... Jan 29, 2021 Messages 2,620 Location USA. Jun 27, 2021 #1 Hello can anyone provide a link or attach a 7 mm 08 Ackley Improved cartridge drawing? Trying to use QL and GRT and need the cartridge specs. Thank you . …3. 280 Ackley Improved, Rifles, Inc. Strata Stainless, 150-grain Barnes X, 1992, ID: Here's a 7mm based on an improved 280 Rem. case.I believe I had 59 or 60 grains of Alliant Reloader 22 pushing that Barnes 3,100 fps, give or take 50 fps. They were grouping well under MOA, too — from a 5-pound rifle! Even with the magazine stuffed, a nylon sling and 2.5-8X36mm Leupold VX-III aboard, the ...The .280 Ackley Improved uses a 7mm/0.284-inch bore bullet diameter, not unlike .280 Rem, 28 Nosler, and of course, 7mm Magnum. Rifle Selection.280 Ackley Improved 150 Grain Swift Scirocco- The primary difference between the standard .280 Rem. and the .280 Ackley Improved is the steeper 40 degree, which lengthens the case body and allows for about 5 percent more powder capacity. When P.O. Ackley gave the .280 Remington a steep 40-degree shoulder and straightened out most of the cartridge case's body taper, he likely knew he was on ...Apr 20, 2019 · PHoto shows 308 family of cartridges including 7mm-08, 260 Rem, and 243 Win. none of which are recommended for Ackley Improved. Reader K. Akins recently wrote to ask which cartridge I thought would benefit the most from conversion to Ackley Improved:the 260 Remington, 270 Winchester, or 7mm-08 Remington. I’m afraid I don’t have ...The standard Collet Die Set for the 7mm Express/280 Rem/280 AI should work. Most Ackley Improved cartridges have less body taper, and a steeper shoulder angle, but the distance from the base of the case to the neck/shoulder intersection is not changed. The original 280 Ackley has a neck intersection distance of 2.188" and the SAAMI has a ...Jan 27, 2020 ... ... Ackley Improved he built for us ... 280 Ackley Improved. 13K views · 4 years ago ...more. Handloader ... 7mm-08 vs 7mm Rem Mag vs .28 Nosler vs .280 ....280 Ackley Improved 140 Grain Berger VLD-H- The primary difference between the standard .280 Rem. and the .280 Ackley Improved is the steeper 40 degree, which lengthens the case body and allows for about 5 percent more powder capacity. When P.O. Ackley gave the .280 Remington a steep 40-degree shoulder and straightened out most of the cartridge case's body taper, he likely knew he was on ...And it is a high performer. According to Derek Peterson, president of Peterson Cartridge, "The .280 Ackley Improved casing will launch a 7mm, 120 gr. bullet over 3,400 fps. The .280 Ackley has a similar velocity to the 7mm Rem Mag, when using light to mid-weight bullets. It also tends to produce less recoil, and less muzzle blast.Such wildcats—or non-standard cases—are often referred to as “Ackley Improved” or AI. With the 150-gr. Noslers (BT, AB or CT) the AI will add about 200 fps to the muzzle velocity.

So the Ackley Improved designation means better performance and better brass life when loaded to SAMME pressures. ... My personal thoughts are that it is equal to the 7mm RM when using 140 grain bullets and is more efficient with the powder. When you move to heavier bullets it falls a bit short, about 100 fps using the 160 grain bullet. However ...This happens because the cases expand so quickly that if there is a flaw or weak spot in the brass it will pop like an overfilled balloon. One example of this would be the .219 Zipper Ackley Improved. If you experience this there are two possible solutions. Try annealing the neck and shoulder down the body to as much as half way along the body.With the .280 Nosler, or more formally known as the .280 Ackley Improved, Nosler domesticated a wildcat. A wildcat cartridge that is. The Rifle Ammo was ahead of its time when wildcat expert PO Ackley tinkered with the .280 Remington by giving its casing a steep 40-degree shoulder. He then discovered that that particular caliber bullet performed just as well as the slightly larger 7mm but ...Jul 10, 2015. #4. I shoot the 168 classic hunter out of my Cooper 280 AI. They shoot very good. I can't comment about terminal effects of the bullet as I have not harvested any animals. The only powder I have tried is H4831SC. My Cooper also has a 24" barrel and I shoot them at 2880 fps.Mar 14, 2024 ... ... Ackley Improved. We hope you enjoy this informative and enjoyable episode ... 118 - 280 Remington & 280 Ackley ... 7mm Showdown | Part 2 | Why ...

These 6mm longsters wouldn’t stabilize in the 1:12 twist of the .244.Naturally, the .243 outsold the .244 by a wide margin and Remington had to eat crow. In 1963, the .244 was renamed 6mm Remington and given a faster 1:9 twist. Despite being a fine cartridge, one which offered an edge of 150 fps over the .243, the 6mm Remington never …280 Remington Ackley Improved. 7mm Rem Short Action Ultra Magnum (SAUM) 7mm Winchester Short Magnum (WSM) 7mm Remington Magnum. 7mm PRC Precision Rifle Cartridge. ... 30-06 Springfield Ackley Improved. 30-40 Krag. 308 Marlin Express. 7.62 Caliber / .310" Diameter. 7.62x39mm. 8mm Caliber / .323" Diameter. 8x57 JS Mauser. 325 Winchester Short ...7 mm Wade Super Seven Chamber Reamer. Info / Options. 7 mm x 08 Obermeyer Chamber Reamer. Info / Options. 7 mm x 243 Winchester Super Short Magnum (WSSM) 28° Custom Chamber Reamer. Info / Options. 7 mm x 26 Nosler Custom Chamber Reamer. Info / Options. 7 mm x 300 British Chamber Reamer.…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. There is the original Parker Otto "PO" Ackley chamber.... Possible cause: The .280 Ackley Improved got its start as a wildcat cartridge, and it's.