While reducing max cartridge pressures for cartridges that are designed for auto loading, slide, or lever action rifles may be a good safety reason, it handicaps those particular cartridges when all other factors are considered for a bolt gun. On a related note, 7mm bullets offer a bigger, more effective frontal diameter than smaller 6.5mm and 0.277 bullets. In this article, Im going to do a detailed comparison of the 270 vs 280 Remington vs 280 Ackley Improved vs 7mm Remington Magnum in an effort to answer the above questions and parse out the differences between those four cartridges so you can make an informed decision regarding which one will work best for you. Developed by P.O. 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These modifications resulted in added capacity, which increased velocity, and less case stretch, which resulted in longer case life. ammo can be used. Remington made a massive splash in 1962 when they rolled out their new Remington Model 700 rifle along with the brand new 7mm Remington Magnum cartridge. Another great caliber that is hard to find accurate factory ammo for - we have experience with this caliber and our house loads are hard to beat! Broadside means the animal is perpendicular to you, facing left or right, not looking at you or away from you. Parker Otto Ackley, better known as P.O. I hit the Cape buffalo squarely in the chest with a .375 Holland & Holland, a cartridge the size of a banana. Handloaded to a sizzling 3,200 fps, its flat and forgiving for shots inside a quarter-mile. For a decade or more, the .280 AI has been my favorite all-around cartridge for big game in the West. Go with the .270 Winchester if you want the cheapest or easiest to find factory ammo or if youre sensitive to recoil. Read the article below if youd like to learn more details about some of the various hunting rifle choices for the 270 Winchester. So, Remington renamed the cartridge AGAIN after a few years and went back to the .280 Remington, which is what its called today. The Lyman 50th Edition (p197-198, 212-216), Speer Number 10 (p182-184, 193-196, 201-204), andHornady 10th Edition(p351-355, 391-400, 406-411)reloading manualswere used as references for the history of the cartridges. 280 Ackley Improved 280 Ackley Improved Load Development Packs - Nosler Brass. Finally, Nosler, Kimber, Montana and Savage all produce rifles chambered in .280 Ack Imp. My original .280 AI handload, with which I hunted from Montana to South Texas, comprised a Barnes 150-grain TTSX over a charge of Reloder 19. This helps support the blog and allows me to continue to create free content thats useful to hunters like yourself. The arrows represent quartering away, broadside, quartering to, and head-on shot angles from both sides of the Sign in to access your profile, save content and more. Savage 110 Hunter .280 Ackley Improved Bolt Action Rifle 22" Barrel 4 Rounds Syn. Not surprisingly, the .270 Winchester and .280 Remington have very similar case capacities while the .280 AI can hold a little more powder because of its less tapered case and steeper 40 degree shoulder. The 40-degree shoulder (10 degrees sharper than the .280 Rem.) Additionally, the .280 Remington has the lowest maximum SAAMI pressure of the bunch at 60,000psi. When he was tinkering with the .280 Remington, Ackley added a bit of his personal trademark: he drastically increased the shoulder angle and straightened out the taper of the body case. Nearly concurrently, Federal announced it was working on three different .280 AI loads, including a Berger bullet and Federals own Terminal Ascent and Trophy Copper bullets. The .270 Winchester uses .277 bullets while the .280 Remington, .280 Ackley Improved, and 7mm Remington Magnum all use slightly larger .284 bullets. Others opted to neck down the .30-06 case to use smaller diameter bullets (like the .25-06 Remington), which is what the folks at Winchester did when they modified the case to use .277 instead of .308 bullets. Choose medium-slow burn rate powders, such as H4831SC and Reloder 19 for light- to midweight projectiles. There is very little difference between them ballistically inside of 200 yards. The .280 AIs additional case capacity does good things, but it doesnt change laws of physics. This is an area where the .280 AI really shines because it has a similar or slightly superior trajectory and resistance to wind drift when compared to the 7mm Remington Magnum, but lessrecoil in a lightweight mountain rifle thats easy to carry in rough country. Since it uses a much larger case diameter, most rifle magazines will hold more .270 Winchester, .280 Remington, or .280 AI cartridges than 7mm Remington Magnum cartridges. Ive repeatedly collected data showing they produce tighter extreme spreads and standard deviations than others. The .280 AI also has a less tapered case than the .280 Remington and the .270 Winchester. pushes that same bullet at 3,248 fpsboth out of 24-inch Wiseman barrels. Or so it is claimed. All Rights Reserved. All will certainly work to one degree or another. This original 7mm gave rise to the 30-06 and all subsequent cartridges based on it, but it also inspired a lot of other 7mm rounds. Head to Head: .280 Ackley Improved vs. 7mm Rem. Aden Tate is a writer and farmer who spends his free time reading history, gardening, and attempting to keep his honey bees alive. However, even though the cartridge closely approaches the overall performance of the 7mm Remington Magnum, the .280 AI still has somewhat less recoil since it requires less powder to achieve a similar level of performance. The cartridge is more than capable of taking large game like elk and moose, but it can do so with less powder and less recoil than magnum cartridges like the 7mm Rem. First, the .270, .280, and .280 AI are all very similar in appearance: they have the same rim diameter as well as very similar case lengths. Not only does the .280 AI offer a noticeable ballistic advantage over the .280 Remington, but its also capable of performance nearly on par with the 7mm Remington Magnum. The .280 Remington is currently manufactured by Browning, Remington, and Winchester in their X-Bolt, Model 700, and Model 70 rifles. In this case, it takes about 6% more powder to produce about 1.5% more velocity and this results in about6-7% more recoil. Read the articles below if youd like to learn more details about some of the various hunting ammunition choices for the 270 Winchester or 7mm Remington Magnum. Semi-automatic and striker-fired, the P320-XTEN is extremely accurate, easy to shoot even with powerful 10mm loads and holds 15-plus-one rounds. The famous wildcatter P.O Ackley, worked on the .280 Remington case in order to add it to the line of "Ackley Improved" cartridges and named it the .280 Ackley Improved 40 degrees. Here's why: 280 AI shoots 50 fps to 100 fps faster than the 280 Remington with the same bullets in the same standard-length actions. Both of those cartridges are very capable performers, though neither is as well known or as widely used as the .270 Winchester or 7mm Remington Magnum. 74.79 $. Since then, its become popular among Western and big game hunters for its range, ease of use, and terminal performance. .280 Ackley Improved Like many calibers, the .280 Ackley Improved (AI) is underrated only by those who have never used it. Then, in 2019, Hornady introduced a 162-grain ELD-X bullet loaded in the .280 AI, adding it to the excellent Precision Hunter line of ammunition. A technician friend at Barnes used this bullet right after it was introduced for a once-in-a-lifetime free-range bison hunt in Utah and shot a large, old bull right at 600 yards with his .280 AI rifle. 130 grain and 150 grain bullets are by far the most common. Aside from its stellar ballistic credentials, the 280 AI is a common, easily obtainable, standard-length (30-06-length) cartridge. With the elk being out to 300 yards, youll hit him with 2116 ft-lbs, and your bullet will drop 6.9. Going longer gains little; going shorter loses too much. Several manufacturers make bolt-action rifles chambered in .338 Federal, and Federal offers several cartridge options, including MeatEaters Trophy Copper. One area where the 280AI and .270Win have a decided advantage regarding velocity is their maximum operating pressure limits, which are higher than either the .280Rem or 7RemMag. When PO Ackley touched a cartridge, people respected the end result. However, since the .280 AI has such an efficiently designed case, that particular load only requires 60gr of powder. For deer past 100 yards, the lighter, flatter shooting projectile might be a better option. This is one of the most interesting points of comparison between the 7mm Rem Mag and .280 AI though. Factory data has it exiting the muzzle at 2,850 fps, just 90 fps slower than the same bullet in Hornadys 7mm Remington Magnum ammo. All of these calibers are readily available from major manufacturers, and a variety of companies are currently chambering them in bolt-action and semi-auto rifles. This 1972 classic stars Robert Redford as an ex-soldier who forsakes civilization for a new life in cold, indifferent lands already home to Indian tribes. Are you sensitive to recoil? If youd like to learn how the .270 Winchester compares to its parent case in the .30-06, read the article below: 270 vs 30-06 Debate Settled Once And For All. Mikey Hartman, Lt. Col. On the subject of efficiency, .280 AI cases dont stretch much each time theyre fired. My first 280 AI was a 5-pound Rifles, Inc. Strata Stainless built by Lex Webernick. Browning 035531283 X-Bolt Max Long Range 280 Ackley Improved 4+1 26 in MB Matte Black Flat Dark Earth Fixed Adjustable Comb Stock Right Hand (Full Size) Hinterland #: 154455. While all four are pretty commonly available, the .270 Winchester and the 7mm Remington Magnum are by far the most popular out of the bunch. What do the .280 Remington and .280 AI have to offer hunters, particularly compared to the .270 Winchester and 7mm Rem Mag? Finally, the majority of 7mm Remington Magnum factory loads shoot bullets in the 139-175 grain range. This is because it takes an additional 3.5 grains of powder to produce that additional 50fps of velocity. Notify Me When Available. Even so, the .280 Ackley Improved is not as fast as the 7mm Remington Magnum, as a few of that cartridge's avid supporters would have us believe. Compare that to a 175-grain 7mm bullet fired at 2,850 fps from the .280 AI, which generates less than 26 ft-lbs. Of the two, the .280 Ackley Improved has a little less recoil, but ammo is easier to find for the 7mm Mag. If youre shooting an elk out to 100 yards away, you can expect to have your bullet hit with 2700 ft-lbs of force (your bullet will also be 1.3 high from where youre aiming). Recipe Type: Rifle . See also [ edit] 7mm Weatherby Magnum The 7mm metric (European) cartridge nomenclature harks way back to the 7x57mm Mauser of 1892. Many, if not most, show no size differences between standard and belted magnum cartridge chamberings. Good brass, once obtained, lasts a long time. For the vast majority of hunters, there is very little difference in their performance at typical hunting ranges (inside 300 yds). I meant, of course, a good bear tale where a grizzly or Alaska brown bear got the upper hand and chewed off the hunters scalp. 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. Bottles & 12-oz. This sharper shoulder can also increase case life, which is a good thing for the handloader.
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