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. Being a heavier projectile of the .280 AI, it carries slightly more energy than the 130 grain bullet while maintaining the same trajectory an maximum point blank range. Maybe a .22LR, .223 Rem., or a .30-06. 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. Savage Arms has announced the newest model in its series of straight-pull rifles, the Impulse Driven Hunter. The results are also about what youd expect for the Hornady Precision hunter loads for those three cartridges. In this case, it takes about 6% more powder to produce about 1.5% more velocity and this results in about6-7% more recoil. Factory .280 AI ammo with it is not super-fast, clocking between 2,900 and 2,950 fps in most rifles, but its outstandingly accurate, always sub-MOA and half-MOA in some rifles. While pump-action and autoloading rifles are great for certain hunting situations, the extremely restricted availability of the .280 Remington for many years, particularly its unavailability in any bolt-action rifles at first, was a major factor that kept it from achieving more widespread acceptance among hunters. To a certain extent, this is true: Factory velocity figures between the two cartridges are nearly identical and loading data shows that the .280 AI requires lighter charges of the same powder to get to a given velocity, which equates to less recoil. A World Record Attempt and everyone is out at the range shooting and practicing. I shoot federal 280 150 gn nossler. Contributor Brad Fenson is back in the kitchen with another recipe for uplanders across the continent. Ive taken several whitetail deer with rifles chambered in .300 Blackout. With factory rifles available from Nosler, Kimber, and Cooper, as well as any custom maker with the right reamer, hopefully well see factory ammunition offerings increase. 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). and a flatter trajectory than the 30-06, pretty good company for a big game cartridge. The .280 Ackley Improved offers a modest ballistic improvement over the .280 Remington in terms of trajectory, wind resistance, and retained energy. Quick View. That reason was heavier bullets. Rifle calibers are kind of like craft beer (hear me out). Thanks to Jack OConnor, the .270 Winchester is considered a classic sheep hunting cartridge if there ever was one. Both Nosler and Hodgdon provide detailed loading data for the .280 AI and, in a pinch, 7 mm SAUM data comes pretty close if you work up your loads carefully. As you can see, there are a number of benefits that come about from utilizing .280 Ackley Improved. 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. Cases obtained by firing--and thus fireforming--standard cartridges through Ackley's improved chamber could be handloaded to give improved performance. 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. The .280 AI was developed by modifying the case from the .280 Remington. 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. Using a shortened .375 H&H Magnum case necked down to use a .284 bullet, the7mm Remington Magnum (often referred to as the 7mm Rem Mag, 7mm Mag, or7mm RM) offered a significant ballistic improvement over the .30-06 Springfield, the .270 Winchester, the .280 Remington, and almost any other cartridge widely available in North America at the time that would fit in astandard/long action rifle. The cartridge uses the same case as the venerable old .308 Win., but necks it up to accept a .338-caliber projectile. and the .280 Ackley Improved is the steeper 40 degree, which lengthens the case body and allows for about 5 percent more powder capacity. This item: RCBS .280 Ackley Improved F L Die Set $75.99 RCBS Single Stage Shell Holder, Hardened Shell Holder $12.36 Customers also search Page 280 ackley improved brass 280 ackley improved rcbs 280 remington hornady overall length gauge lee precision reloading case length gauge From the brand Reloading Kits Visit the Store POWDER DISPENSERS 139 gr. The relatively new .280 AI is nowhere near as common as the 270 or 7mm Rem Mag. The elks out to 500 yards on a distant hillside? Of all the many calibers Parker Ackley modified by lengthening the powder chamber and steepening the shoulder angle, the .280 Ackley is the only one, so far, that has been adopted by SAAMI. You want a caliber thats easy to find, relatively cheap, and effective on most of North Americas game animals. Even so, the 7mm Remington Magnum can hold significantly more powder than the other three, which is due in large part to its larger diameter case. A .280 Ackley Improved simply shoots better over long range than a .30-06. Wind deflection at 400 yards would be about 8.5 inches. Recipe Type: Rifle . Mag., and cooks along about 200 fps faster than the .308 Win. The data used to compare the trajectory and wind drift of the cartridges was obtained from Hornady (here, here, here and here) and Nosler (here). Its also true that those .280 AI loads generally require a little less powder and thus produce less free recoil energy (all other things being the same). Save my name, email, and website in this browser for the next time I comment. [2] Several different companies manufacture rifles chambered in .280 AI, including the Ruger M77 Hawkeye, Savage 110, Browning X-Bolt and Weatherby Mark V. The .280 AI is basically the .280 Remington redesigned by steepening its case shoulder, thus resulting in an increased powder capacity giving 100 fps of muzzle velocity, comparable to the 7mm Remington Magnum. Handloaders love the 280 AI for the same reason they love most Ackley Improved cartridges: the slight increase in speed plus the decreased need to trim-to-length when reloading. Great article and comparison of similar cartridges. Give a Gift ammo can be used. Image shows a scopes, block stocked Rifles Ind. Mag. .280 Ackley Improved Like many calibers, the .280 Ackley Improved (AI) is underrated only by those who have never used it. Improved Military Rifle IMR 4320. Additionally, since it has such an efficient design, the .280 AI doesnt use as much powder as the 7mm Remington Magnum to achieve nearly the same level of performances. 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! 140 gr. Nosler offers two Custom and two Trophy Grade loads for the .280 AI but thats about the extent of factory-loaded options. Even so, no animal will never know the difference if your shot is placed in the right spot. Joseph VonBenedikt is with Joel Hodgdon to talk about the improved accuracy and long-range potential of the already reliable Core-Lokt ammo line. in a package that gives additional room in the magazine (as the body diameter is smaller), and makes an excellent all-around choice. Mag. 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In other words, energy and maximum point blank range for this line of cartridges is similar, making them suitable for mid size big game such as white tail deer and Dall ram, with the correct bullets, any of these cartridges is suitable for larger game such as elk and red stag. Its still a good load, but I now prefer the slightly more aerodynamic 139-grain LRX, pushed faster, for work at traditional hunting distances inside a quarter-mile. If you have a rifling twist thats fast enough, the .280 AI has enough case capacity and a long enough neck to work wonderfully with projectiles up to and including Hornadys 180-grain ELD Match and Bergers 195-grain Extreme Outer Limits bullets. The SAAMI spec 280 Ackley Improved chamber is .014 inches shorter at the datum line headspace dimension than the traditionally accepted wildcat chamber spec as previously produced. Since then, its become popular among Western and big game hunters for its range, ease of use, and terminal performance. However, the management at Remington gave the .280 Remington another shot and reintroduced it in 1979 as the 7mm Express Remington in a bid to piggyback off the popularity of the 7mm Remington Magnum. Sign up with your email address to receive news and updates. pushes that same bullet at 3,248 fpsboth out of 24-inch Wiseman barrels. He's even used it on African plains game. Finally, the majority of 7mm Remington Magnum factory loads shoot bullets in the 139-175 grain range. 280 Ackley Improved Vs. 280 Remington [ edit] Loaded with a 150 grain bullet, the .280 AI shot from a 24" barrel gives a muzzle velocity of approximately 3,060 fps, which is about 100 fps faster than a .280 Remington loaded with a bullet of similar weight. Mag. Well, maybe not when you consider its ballistic performance plus a few gun-fit, gun-handling, and handloading issues. As you said no animal is going to know the difference. Choose medium-slow burn rate powders, such as H4831SC and Reloder 19 for light- to midweight projectiles. speeds with the same bullet. Data shown in the sixth edition of the Nosler . I hit the Cape buffalo squarely in the chest with a .375 Holland & Holland, a cartridge the size of a banana. It has a relatively light recoil for its power and is common in bolt action rifles. MFG #: 035531283. PO Ackley, as he was widely called, had already made something of a name for himself with his contributions to other popular calibers. In other words, that extra powder is resulting in diminishing returns in terms of velocity, but still producing more recoil. The original .270 Winchester load shot a 130 grain bullet at a velocity of 3,140 feet per second (2,846 ft-lbs of energy). By 2007, the .280 Ackley Improved managed to finally be registered with SAAMI by Nosler, cementing its place in the shooters gun cabinet. When you bump up to the magnum .30s, comparisons change. Like many calibers, the .280 Ackley Improved (AI) is underrated only by those who have never used it. Just for reference, the .280 AI will shoot a light 140-grain bullet about 300 fps faster than the .270 Winchester can. As is the case with many other cartridges developed in the United States, the story of the .270 Winchester, the .280 Remington, the .280 Ackley Improved, and the 7mm Remington Magnum starts with the .30-06 Springfield. Recoil is a product of ejecta mass (powder as well as bullet) and velocity. The .280 Ackley Improved is the author's all-time favorite cartridge for big-game hunting in the West, and he's used it successfully on everything from mule deer to elk. For chasing antelope or predators, 120-grain bullets like the ballistic tip scream along at nearly 3,400 fps and drop only 5 inches at 300 yards. | From $ 142.99. Thats not a gigantic difference, but its also not nothing either. However, he also ended up with a number of other benefits with his new and improved cartridge. Mag., you should be able to shave a bit of weight without suffering excessive recoil. Its not a huge deal prior to expansiononly about four hundredths of a square inch between a 6.5mm/.264 and a 7mm/.284 diameter projectile. Ever since, the .280 Ackley Improved has earned great popularity in the US market. Why did the .280 Remington struggle to initially gain traction in the commercial shooting and hunting market? If youve done any degree of shooting in the past with a rifle chambered in .17, you can thank Ackley for his foundational work on the caliber. Typically, a rifle magazine that can hold 4-5 .270 or .280 cartridges will only be able to hold 3 7mm Remington Magnum cartridges. Using smokeless powder and a 150 grain spitzer bullet fired at a 2,700 feet per second (2,428 ft-lbs of energy), the .30-06 Springfield was a massive leap forward in performance compared to other popular American cartridges used during that era like the.45-70 Government. Lets pause and take a look at why the 7mm/.284 bore diameter is significant. From $ 84.99. 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. Custom Mossberg 500 at the Range and Live Turkey!. You consider its ballistic performance plus a few gun-fit, gun-handling, and website in this browser the. In 280 ackley improved browser for the.280 Ackley Improved has earned great popularity the! Between a 6.5mm/.264 and a flatter trajectory than the 30-06, pretty good company for a big game hunters its... Improved accuracy and long-range potential of the nosler with Joel Hodgdon to talk about the accuracy! 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