Are you a handloader? To set the stage for this cartridge description, you should know that it is but one of more than a dozen commercially loaded 7mm cartridges now on the market that fire .284-inch diameter (28-caliber) bullets. I have a custom .280 Remington. Though dimensionally identical to (and thus completely interchangeable with) the original .280 Remington, Remington claimed the new 7mm Express loads had a tiny velocity advantage over the original .280 Remington factory loads when using the same weight bullet. Its also better suited to using heavier bullets than the other cartridges. The German 7x64mm Brenneke began taking game in 1917. Its a legitimate, repeatable 0.40-MOA bullet in my Proof rifle, and even though velocity with that tuned handload is modest, at 2,870 fps, it has proven to be excellent on mule deer and elk. BUY A REALLY GOOD 280 REMINGTON HUNTING RIFLE HERE, BUY A GREAT 280 ACKLEY IMPROVED HUNTING RIFLE HERE, BUY AN EXCELLENT 7mm REMINGTON MAGNUM HUNTING AMMO HERE. In 1957 Remington introduced the .280 Remington, which was based on the .30-06 Springfield case necked down to 7mm. Although the .280 Remington is considered to be a very balanced cartridge combining the best attributes of both cartridiges due to the high ballistic coefficient and sectional density, characteristic of 7mm calibers, it did not reach the popularity achieved by the .30-06 and .270 Win. Barrel length is another thing you should keep in mind. You should be able to find the following factory loads: Nosler Trophy Grade 140-gr AccuBond 3,150 fps, Nosler 150-gr. Shown are 280 AI cartridges with various bullets and a box of Nosler Custom loaded ammo. A 280 AI can safely fire 280 Remington ammunition, simultaneously fire-forming brass cases to reloadable 280 AI dimensions. When chambered in a fine rifle like this Nesika Hunter Model V, the .280 Ackley Improved cartridge is highly accurate, mild mannered, and a virtual death ray in the field. 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The 7RemMag is loaded 3000psi less pressure than the same case of a .264WinMag and 4000psi less than the .280AI (plus the .280AI has a barrel of 2 longer). You want a caliber thats easy to find, relatively cheap, and effective on most of North Americas game animals. Still, in the right environment, the .300 Blackout can be a sweet deer caliber, and it can do double duty on hogs as well. Good brass, once obtained, lasts a long time. Heres the obvious question: with all these 7mms on the market, why does anyone want to mess with the 280 AI? I've also had superb results with Berger's 168-grain VLD Hunting. Walther's new Performance Duty Pistol is ready for both concealed carry and conventional service situations. I zero it at 300 yards, and it drops just 8 inches at 400 yards. with a similarly-weighted bullet. 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. That same rifle can go elk hunting with 160-grain bullets at just under 3,000 fps and 175 grainers still cross the 2,800 fps mark. 280 Ackley Improved Vs. 7mm Remington Magnum, Last edited on 14 February 2023, at 22:32, ".280 Ackley Improved: A Celebrated History", https://en.wikipedia.org/w/index.php?title=.280_Ackley_Improved&oldid=1139392825, This page was last edited on 14 February 2023, at 22:32. Aden Tate is a writer and farmer who spends his free time reading history, gardening, and attempting to keep his honey bees alive. | In the world of rifles, Savage announced several versions of the Model 110 chambered in .280 AI. This is illustrated in the table below comparing Nosler Trophy Grade and Hornady Precision Hunter factory ammunition loaded with 130gr AccuBond (.435 BC) and 145gr ELD-X (.536 BC) bullets in .270 Winchester, 140gr AccuBond (.485 BC) and 150gr ELD-X (.574 BC) bullets in .280 Remington, 140gr AccuBond (.485 BC) and 162gr ELD-X (.631 BC) bullets in .280 AI, and 140gr AccuBond (.485 BC) and 162gr ELD-X (.631 BC) bullets in 7mm Rem Mag. Its muzzle energy exceeds the .30-06, equals that of the 7mm Rem. Of these, 140 grain, 150 grain, 160 grain, and 175 grain bullets are most common. Best .280 Remington Ackley Improved Ammo. E tips so its ready for CA hunting. A .284 bore comfortably pushes bullets of 140 to 180 grains. From $ 142.99. The unique roots of the 7mm Remington Magnum and the shared heritage of the .270 Winchester, .280 Remington, and the .280 Ackley Improved are all obvious in the photo below. Give a Gift A primary advantage of the .280 Ackley Improved is the increased magazine capacity. Parker Otto Ackley, better known as P.O. The same goes for the 145gr .270 Winchester vs the 150gr .280 Remington load. 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. Such projectiles drop less and drift less in the wind, even though they do start out a bit slower than light-for-caliber bullets. Hornady Lock-N-Load Straight OAL Gauge. Finally, bullet size is other big distinguishing factor between them. Some shooters question the feeding reliability of any 40-degree cartridge shoulders. A World Record Attempt and everyone is out at the range shooting and practicing. New horizons and beers are on tap. With that in mind, the minor differences in trajectory and retained energy between the three are not at all surprising. 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. If you compare the .280 Ackley Improved with its father round, the .280 Remington, you end up seeing somewhere around 50-150 fps more with the Ackley Improved. Save my name, email, and website in this browser for the next time I comment. Lets say you want to shoot a bigger bullet than 140-grain, though. Remember: the gap in performance between many .280 Remington, .280 Ackley Improved, and 7mm Remington Magnum loads (especially the latter two) is pretty small. If you are a handloader though, the choice is a no-brainer. Velocities are average and can vary 100 fps either way depending on barrel length, chamber dimensions, powder type, etc. The Ballistics of the .280 Ackley Improved, Lets say that elk is out to 300 yards away, though. That might not seem like much, but the .280 Ackley Improved (also known as the 280 AI, 280 Remington Ackley Improved, or 280 Rem. Ackley Improved 40 degrees) hit something of a sweet spot between the .280 Remington and the 7mm Remington Magnum. Drive Nosler's 150-grain AccuBond Long Range bullet 3,050 fps in a 10 mph wind, zero it for maximum-point-blank-range (10-inch target,) and with a dead-center aim your bullets should stay within that target out to 376 yards. Some say the shoulder angle doesnt really prevent neck stretching (brass migration into the neck.) My favorite dies are by Redding, from its Premium line. As expected, the lighter bullet leaves the barrel at a faster speed, but its not going to hit your target with as much oomph as the heavier bullet will. Several more 7mms have popped up in recent years including the super magnum 7mm STW, 7mm RUM, and 28 Nosler. 7mm Rem. Nosler offers two Custom and two Trophy Grade loads for the .280 AI but thats about the extent of factory-loaded options. The 280 AI is quietly but steadily gaining converts. If you buy a rifle without the standardized chamber, its best to have a gunsmith with the appropriate headspace gauges check it out. To fully-realize the versatility of this cartridge, youll either need to handload or be willing to purchase custom loaded ammunition. As the mathematicians among us know, when you increase diameter, frontal surface area increases exponentially. Ackley. Do you want a cartridge well suited to hunt elk, moose, red stag, or kudu with on an Africa or New Zealand hunting safari? A mushroomed big-game bullet with expansion of about double the original diameter is considered ideal; that 7mm/.284-diameter bullet measures 0.568 inch across, with a surface area of over 1.01 square inches. If youre planning on going after hogs in a dense, overgrown landscape, you might opt for the slower, heavier bullets. Maximum pressure obtained from SAAMI (p23 and 28). Compare that to the 6.5mm/.264, which measures 0.528 inch across and has a surface area of 0.87. According to Derek Peterson, president of Peterson Cartridge, "The .280 Ackley Improved casing will launch a 7mm, 120 gr . The lighter powder charge and slower MV of the 280 AI add up to less kick than a 7mm Rem. Mag. 110 gr. Finally, Nosler, Kimber, Montana and Savage all produce rifles chambered in .280 Ack Imp. A .280 Ackley Improved simply shoots better over long range than a .30-06. Saami spec on the 280ai is 3.330 coal. Your articles are not like that. 280 Ackley Improved 280 Ackley Improved 120gr Barnes TTSX. but this depends on the maker. And as I write this, at least one additional major ammunition manufacturer is preparing to introduce factory-loaded ammunition. 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