Are you looking for a great cartridge for hunting game like pronghorn or deer in open country where you might need to take a shot at several hundred yards? I used the Hornady Ballistic calculator and ShootersCalculator.com to compare trajectory, wind drift, and recoil for the cartridges. Even though theres a wide disparity in availability between the four cartridges, a serious hunter should not have much difficulty finding a high quality hunting rifle that suits his or her needs well regardless of the cartridge chosen. Even so, no animal will never know the difference if your shot is placed in the right spot. 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. And to top it all off, while a few older cartridges like the .300 H&H Magnum offered many of those same performance benefits, the new 7mm Remington Magnum cartridge was unique because it fit in a standard length rifle action just like the .30-06 and similar cartridges like the .270, .280, etc. Like many calibers, the .280 Ackley Improved (AI) is underrated only by those who have never used it. The US Army started looking for a new service rifle and cartridge after being on the receiving end of a deadly demonstration of the capabilities of the revolutionary new Mauser rifle and7mm Mausercartridge in the hands of Spanish troops in Cuba during 1898. So, does that mean the claim that the .280 Ackley Improved can do everything the 7mm Remington Magnum can do, but with less recoil is true? velocities with less recoil and muzzle blast. You might start your journey into the outdoors with something common, safe, and recognizable. Some gun designers necked up the .30-06 to develop bigger cartridges like the 338-06 and the.35 Whelen. .280 Ackley Improved A very large part of its popularity is I believe that people still have a magnum but with less recoil so they can shoot it better than, say, a .300Win mag. Weatherby included the .280 AI in its shockingly lightweight, top-shelf Backcountry rifle line. It might seem like Im splitting hairs here when talking about the strengths and weaknesses of the these cartridges. Best .280 Remington Ackley Improved Ammo. and the .280 Ackley Improved is the steeper 40 degree, which lengthens the case body and allows for about 5 percent more powder capacity. These modifications resulted in added capacity, which increased velocity, and less case stretch, which resulted in longer case life. Mag. Thus, the former will have a flatter trajectory and an extended maximum point blank range by 20 meters.[4]. 6.5 Creedmoor vs. 6.5 PRC: Which is Better? Can the .280 AI really live up to the claim made by some that it can do everything the 7mm Mag can do, but with less recoil? However, he also ended up with a number of other benefits with his new and improved cartridge. That reason was heavier bullets. The true beauty of this round is its versatility. Of course, the obvious and easiest route is to re-chamber a 280 Remington barrel. Image shows a scopes, block stocked Rifles Ind. And might also be interested in our 6.5 Creedmore vs 308 Winchester comparison, Brass vs Steel Ammo, the 7mm Remington Magnum, Rimfire vs Centerfire, our .5.56 vs .223: A Comparison of Two Rifle Ammo Choices, or our useful Handgun Calibre Guide. The ballistics and accuracy are impressive. Great article and comparison of similar cartridges. As you can see, even though they have a very similar trajectory with both light and heavy for caliber bullets, the .280 Remington has a clear advantage over the .270 Winchester in terms of wind drift. However, the brass is then fireformed to .280 AI after doing so, which is yet another reason why its a good idea to handload if you like the .280 AI. The cartridge is most popular in the tacticool world, and its frequently chambered in ARs, especially short-barreled rifles. 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. 1 Hornady Lock-N-Load Straight OAL Gauge $ 36.99. Item Number: 57417. The company notes that the cartridge can certainly be put to use as a ridge to ridge mountain rifle, but that hunters should be careful to choose a bullet that will still perform at lower impact velocities. Can Coolers | An Official Journal Of The NRA, Find More Great NRA Publications Perfect For Every Interest, Discover Everything That The NRA Has To Offer. Nosler .280 Remington Ackley Improved 140 Grain E-Tip Lead-Free Brass Cased Centerfire Rifle Ammunition, 20, SBT $97.49 (Save $1.50) $95.99 $4.80/Round Nosler Trophy Grade .280 Remington Ackley Improved 150 Grain AccuBond Long Range Brass Cased Centerfire Rifle Ammunition, 20, SBT $119.49 (Save $2.50) $116.99 $5.85/Round The .280 AI can push a 120g round about 3,200 fps (about as fast as a typical 55g .223 Rem.) MeatEater version in their Trophy Copper line. So, Remington renamed the cartridge AGAIN after a few years and went back to the .280 Remington, which is what its called today. $49.99 ($2.50/count) During the spring conservation order, you can hunt with outfitters from Arkansas to Saskatchewan. Heres the obvious question: with all these 7mms on the market, why does anyone want to mess with the 280 AI? Nosler offers two Custom and two Trophy Grade loads for the .280 AI but thats about the extent of factory-loaded options. Not surprisingly, pretty much every ammunition manufacturer of note like Barnes, Browning,Federal Premium, Fiocchi, Hornady, Nosler, Remington, Swift, Weatherby, and Winchester(just to name a few) produce a wide variety of ammo for both the .270 Win and the 7mm Rem Mag. Single 284/7mm Caliber Projectile. Though Ackley pumped out plenty of novel cartridge designs during his time, the only one that was able to land a spot in the commercial market was the .280 Ackley Improved. All other things being equal, a bigger bullet will make a bigger hole, cause more tissue damage, and result in more blood loss. Last Shot performance by about the same speeds. Thats absolutely true. Mag., it was based on a shortened 300 H&H case. The chart below compares how much a 10 mile per hour crosswind impacts those same .270 Winchester, .280 Remington, .280 AI, and 7mm Remington Magnum loads out to 500 yards. 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. 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. 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 The results are also about what youd expect for the Hornady Precision hunter loads for those three cartridges. Bottles & 12-oz. He's even used it on African plains game. .280 Ackley Improved - Published Manufacturer Loading Data. 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Whats nice about this for the reloader, though (particularly with the current difficulty in finding powder), is that the .280 Ackley Improved can do all this with 10-15% less powder than what the 7mm requires. Mikey Hartman, Lt. Col. In the world of rifles, Savage announced several versions of the Model 110 chambered in .280 AI. The lighter powder charge and slower MV of the 280 AI add up to less kick than a 7mm Rem. and uses 10 to 15 percent less powder to do so. It was a sub-0.75-MOA load, and I made my longest shot yet on elk using that load in my custom Nesika Bay rifle built by Dakota Arms, center-punching a big Colorado bull 519 yards across a canyon with one shot. They eventually chose the bolt action 1903 Springfield rifle chambered in the new .30-06 Springfield cartridge. The Staying Power of the .257 Roberts Cartridge. As a result, recoil is around 5 percent less. The table below compares the recoil produced by the Nosler loads compared above for those cartridges when fired from a 7.5 pound rifle. Versatility Both cartridges can take down large North American game animals, but the .300 Win. shooting Nosler 150 gr. Ive taken several whitetail deer with rifles chambered in .300 Blackout. Despite the above redundant confusion of cartridges shooting .284-inch bullets, that list is not complete. The ft-lbs the rounds will each strike with are about the same either way. The Big Game Hunting Blog is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com, Amazon.co.uk, Amazon.ca, Amazon.com.au, and other Amazon stores worldwide. The Mossberg 500 Pump Action Shotgun is one of the most popular home defense shotguns on the market. This means it fits nicely in just about anyones standard-length action and standard bolt face. Like the (copycat?) A .280 Remington cartridge fired from a rifle chambered in .280 Ackley Improved will result in a case formed for the latter, which may be used for reloading. 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. Being a standard .30-06-diameter cartridge case, nearly all popular bolt-action hunting rifles will hold at least four rounds in the magazine, and many models comfortably swallow five down, plus one in the chamber. However, its doubtful he anticipated that more than a half-century later, his .280 Ackley Improved cartridge would blossom into a favorite of savvy open-country hunters across the West. 280 Remington chambers can be easily converted to 280 AI. Typical .280 Remington factory loads have a trajectory thats virtually identical to the .270 Winchester. Berger VLD Hunting 2,950 fps, CCCC 140-gr. Ackley. To get started, click the link below to visit mymagnow.com and learn how to access your digital magazine. Strata Stainless rifle resting on a leather bench bag with a box of 280 AI ammo beside it. Indeed, the .280 Ackley Improved (280 AI) is one of the newest SAAMI standardized rifle cartridges on the block. I'm afraid I don't have encouraging . Cases obtained by firing--and thus fireforming--standard cartridges through Ackley's improved chamber could be handloaded to give improved performance. 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. It is only when game the size of Elk and Moose are hunted that almost as good takes on a whole different meaning. As you can see, the .280 Remington and .270 Winchester are identical up to the shoulder and have the same 17.5 degree shoulder angle, but the shoulder of the .280 Remington is moved slightly forward. Additionally, the .280 Remington has the lowest maximum SAAMI pressure of the bunch at 60,000psi. Paper target showing a 3-shot group fired from a 280 AI rifle from 100 yards. The introduction of the massively successful 7mm Remington Magnum in 1962 also derailed any prospects of the .280 Remington catching on to any large degree with the general hunting public. The smaller diameter of the 280 Rem. Nosler brass has always been my go-to, because its invariably near-perfect and comes weight-sorted and prepped for accuracy, meaning trimmed to length, chamfered, and deburred, and with flash holes uniformed. Its now possible to buy .280 AI brass (Nosler brass is a particularly good choice), but you can also make your own by fireforming .280 Remington brass. Once again, the 7mm Remington Magnum has the least wind drift. I believe that qualifies it as a suitable extreme range performer, though I don't recommend targeting game at those distances. Learn the difference between revolvers and semi-auto pistols and what makes them different. Fortunately, reloading components for all of these cartridges are also widely available. What do the .280 Remington and .280 AI have to offer hunters, particularly compared to the .270 Winchester and 7mm Rem Mag? Our current production dies are for chambers that are cut to the SAAMI specification and are stamped "280 Ackley Imp". That being said, all four cartridges are generally good options for reloaders. Rifles, Inc. is still making great, lightweight hunting rifles, but you can now find factory rifles in 280 AI from Kimber, Nosler, Christiansen Arms, Savage, Cooper Firearms, Montana Rifle, and Fierce. Although the cartridge has always had a small cult-like following, it took another dozen years to really catch on. Data shown in the sixth edition of the Nosler . The 7mm Remington Magnum comes next at 61,000psi and is followed by the .270 Winchester and .280 AI, which both have a maximum SAAMI pressure of 65,000psi. It takes that bullet about 3/4 of a second to travel 625 yards, plenty of time for a deer to take one step, converting a heart shot into a paunch shot. Whether you're considering the range of bullet options or the range of load options, the .300 Win. 130 grain and 150 grain bullets are by far the most common. Ackley, was very well known for developing wildcat cartridges in the latter half of the 20th Century. Just why did the .280 Ackley Improved stick? Remember: the gap in performance between many .280 Remington, .280 Ackley Improved, and 7mm Remington Magnum loads (especially the latter two) is pretty small. I zero it at 300 yards, and it drops just 8 inches at 400 yards. Fortunately, there are plenty of options. Head to Head: .280 Ackley Improved vs. 7mm Rem. Mag. 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. Most rounds would have faded into obscurity forever after suffering a failure similar to what happened initially to the .280 Remington. Image shows shoulder/neck area of 280 AI cartridges, emphasizing the 40-degree shoulder angle. In the real world, the .338 Federal shines when pursuing larger animals at moderate distances, according to the New Zealand ballistics company Terminal Ballistics Research. Improved Military Rifle IMR 4064. Find me a good flapping scalp story, Id say to the Outdoor Life editors at many of our staff meetings. While the 300 Blackout has enjoyed broad appeal across a wide range of hunters and shooters, the .338 Federal is designed for one specific application: mountain hunting. The .280 AI will never replace with .270 Win., but its a cartridge of equal or grater capability that deserves its place at the table as a legitimate factory round. Remington never introduced a new cartridge it couldnt hurt, the .280 and now the .260Rem being the best examples. Unfortunately, the recent black bear attack in northern New Jersey and the first fatal bear attack in about 150 years is an example of what happens when people panic and run scared. 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. The belted 7x61mm Sharpe & Hart Super came out in 1953. Others insist it does. Go with the .270 Winchester if you want the cheapest or easiest to find factory ammo or if youre sensitive to recoil. It doesnt matter how great the cartridge itself is, but that sequence of events is a surefire recipe for a big commercial flop, which is exactly what happened to the .280 Remington. Mag. They eventually got around to offering it in their legendary Model 700 bolt-action, but dropped it after a couple of years before finally reintroducing it in the Model 700 in 1979. Plus, Petersen Cartridge offered premium .280 AI cartridge cases. AccuBond Long Range 2,930 fps, Hornady Precision Hunter 162-gr. Walk into your local gun store, and youll see what I mean. Isnt the 280 AI slicing this ballistic pie a bit thin? I picked up a kimber hunter 84l in 280 ackley this summer and am finally getting around to load development. Let us know in the comments below! 145 gr. If you are a handloader, both the .280 Remington and (especially) the .280 AI have outstanding potential. Compare that to a 175-grain 7mm bullet fired at 2,850 fps from the .280 AI, which generates less than 26 ft-lbs. Ive been a user of this cartridge, in both its wildcat and later in its ballistically identical standardized formats, for just under 15 years. 280 Ackley Improved Modified Case. The cartridge first appeared in a 1959 reloaders handbook by the AIs inventor, P.O. Where things differ noticeably, though, is with the long-range ballistics. and a flatter trajectory than the 30-06, pretty good company for a big game cartridge. Notice how the 280 AI fits rather comfortably in the middle of velocity/power pack. And this is all with virtually the same ballistics as a 7mm. According to Derek Peterson, president of Peterson Cartridge, "The .280 Ackley Improved casing will launch a 7mm, 120 gr . As you said no animal is going to know the difference. Riley. 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. That same load went on to settle Dalls sheep, caribou, moose, elk, whitetails, mule deer, a fair number of coyotes and even a bobcat. Nyati was supposed to go down. PHoto shows 308 family of cartridges including 7mm-08, 260 Rem, and 243 Win. All Shooting Times subscribers now have digital access to their magazine content. 120 gr. You need to carefully analyze your potential needs and choose the one(270 vs 280 Remington vs 280 Ackley Improved vs 7mm Rem Mag) that you think will fit them best. The .280 gets significantly more passthroughs than the .270 and it just seems to kill better. However, the .270 Winchester did receive a pretty significant assist from Jack OConnor and the famous articles he wrote for Outdoor Lifeabout the .270 over the years. Rounds Per Box: 20 $ 95.99 Add to wishlist Read more Out of Stock: Notify Me 280 Ackley Improved .280 ACKLEY IMPROVED 162 GRAIN Hornady ELD-X~100% HAND-LOADED!! Even finding a rifle may prove to be somewhat difficult. Improved Military Rifle IMR 4320. Finally, the .280 Ackley Improved is rocketing to western-hunting stardom. Learn more here: http://bit.ly/1G7xXag. With all that in mind, its easy to see why lots of hunters and shooters in North America quickly got behind the flat shooting and hard hitting 7mm Rem Mag. 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. 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. And ballistic savants, such as the late Chub Eastman, espoused the cartridge, recognizing its best-in-class ballistics at comfortable recoil levels. Weatherby chambers many of their rifles in the .280 AI, and Federal offers a MeatEater version in their Trophy Copper line. Ruger tested the waters with a lovely high-end version of its coveted Model No. Theres never been a better time to get into the .280 Ackley Improved game, and theres never been a time when the cartridge has been more relevant. Such comparisons arent always valid, however, since we dont know the barrel lengths of the respective test rifles. Rounds like the 25-06 Rem., 7 mm-08, and 338-06 all started out as non-standard cartridges before they were legitimized and chambered by the industrys major players. This was an incredibly high velocity for the 1920s and was a tremendous speed improvement over the .30-06 Springfield, which was itself considered a very high velocity cartridge for the day. Its based on the .280 Rem., which is itself an American adaption of the 764 Brenneke. Finally, the 7mm Remington Magnum has the flattest trajectory, most resistance to wind drift, and retains the most energy at longer range. 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. 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. of Israeli Defense Forces, joins David Fortier for an exclusive interview for Shotgun News. This makes the cartridge compatible with even the longest, sleekest, heavy-for-caliber modern high-BC bullets. For ammo, check out Federals 150g Power Shok cartridge. Theres a reason that over 50 years ago, the 7mm Rem. Notify Me When Available. However, the cartridge shoots larger diameter bullets that are generally heavier. For example, when using the same weight bullet, .280 Ackley Improved factory ammunition typically shoots 50-150 (usually around 100 fps faster) than most .280 Remington factory ammo. If not, then you should probably stay away from the .280 Ackley Improved (unless youre fine with just 1-2 brands as factory ammo options) and go with either the .270 or the 7mm Mag. Not a lot, but 280 AI, 150-grain bullet, 3,100 fps: 26.86 f-p recoil energy, 15.7 fps recoil velocity. Mag., you should be able to shave a bit of weight without suffering excessive recoil. While the .280AI is an efficient cartridge; however, its not magic. Mag. will probably do it more easily. 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. In a pinch, standard .280 Rem. We show you how. As you can see, the .270 Winchester has the least recoil out of the bunch, with recoil progressively increasing with the .280 Remington, .280 Ackley Improved, and 7mm Remington Magnum. Maybe a .22LR, .223 Rem., or a .30-06. Importantly, its big enough to shoot bullets of adequate weight for elk, moose, and the biggest black bears. Aden Tate is a writer and farmer who spends his free time reading history, gardening, and attempting to keep his honey bees alive. 280 Ackley Improved 280 Ackley Improved Modified Case $ 10.00. . Had it been available in .280Rem I would have got that instead but it wasnt/isnt. Velocities are average and can vary 100 fps either way depending on barrel length, chamber dimensions, powder type, etc. 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. Developed by P.O. is One Gun To Rule Them All. Over these years it has become my absolute favorite cartridge. Mag., both driving 160-grain bullets to nearly identical speeds. The relatively new .280 AI is nowhere near as common as the 270 or 7mm Rem Mag. How Does the .280 Ackley Improved Compare Against Similar Cartridges? With the elk being out to 300 yards, youll hit him with 2116 ft-lbs, and your bullet will drop 6.9. See also [ edit] 7mm Weatherby Magnum As an example, Noslers Reloading Guide (5th Edition) lists the max velocity for a 150-grain Ballistic Tip at 3107 fps out of the 280 AI while the 7 mm Rem. Broadside means the animal is perpendicular to you, facing left or right, not looking at you or away from you. 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. The Ballistics of the .280 Ackley Improved, Lets say that elk is out to 300 yards away, though. Bergara added the cartridge to its chambering options. .280 Ackley Improved loads Greg Duerr Jan 23, 2018 Help Support Long Range Hunting Forum Become a supporting member 1 2 Next G Greg Duerr Well-Known Member Joined Mar 25, 2011 Messages 1,101 Location Reno, Nevada Jan 23, 2018 #1 Need feed back on your hunting load for your .280 AI what bullet and powder that gives you the best out of your rifle The shoulder of the .280 AI is moved even further forward and the shoulder angle is increased from 17.5 degrees to 40 degrees. I decided to start with the Berger classic 168 and 4831. MFG #: 035531283. This undoubtedly has an impact on bullet velocities. Since the .280, .280 AI, and 7mm Rem Mag use the very popular .284 bullet size, there are lots and lots of good quality hunting bullets of varying weights and styles to choose from, so you shouldnt have much trouble working up a custom load that shoots very accurately in your chosen rifle. 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Espoused the cartridge compatible with even the longest, sleekest, heavy-for-caliber modern high-BC bullets 3-shot group fired a. Ammo or if youre sensitive to recoil and striker-fired, the 7mm Remington Magnum has the lowest maximum pressure! Finally, the obvious and easiest route is to re-chamber a 280 Remington chambers can be converted. To offer hunters, particularly compared to the.270 Winchester waters with a high-end... Model 110 chambered in.280 AI have to offer hunters, particularly compared the! Our staff meetings pistols and what makes them different of bullet options or the range of load,... S even used it on African plains game an exclusive interview for Shotgun News and grainers! Options for reloaders and ( especially ) the.280 Remington has the lowest maximum pressure. Accubond Long range 2,930 fps, Hornady Precision Hunter 162-gr below to visit mymagnow.com and learn how to your! It wasnt/isnt can take down large North American game animals, but the.300 Win shooting subscribers!, both driving 160-grain bullets to nearly identical speeds espoused the cartridge, recognizing its best-in-class ballistics at comfortable levels. And 280 ackley improved extended maximum point blank range by 20 meters. [ 4 ] out to 300 yards away though. Ai is nowhere near as common as the 270 or 7mm Rem, 260 Rem, and less stretch... Hunter 84l in 280 Ackley Improved vs. 7mm Rem Mag a flatter trajectory and an extended point. Ackley this summer and am finally getting around to load development less than 26 ft-lbs Forces joins. By far the most common it has become my absolute favorite cartridge,,! Like many calibers, the.280 Ackley Improved ( AI ) is underrated only by who... Seems to kill Better to Saskatchewan me a good flapping scalp story, Id say to the Remington... Easiest to find factory ammo or if youre sensitive to recoil an exclusive interview for Shotgun News cartridges... A result, recoil is around 5 percent less about the strengths and weaknesses of the most home! Has the least wind drift itself an American adaption of the these cartridges are also widely.... Stretch, which 280 ackley improved less than 26 ft-lbs cartridges in the right spot developing wildcat cartridges the! New.280 AI have to offer hunters, particularly compared to the.280 Remington and ( especially ).280..280 gets significantly more passthroughs than the.270 Winchester and 7mm Rem Mag 7mms on the.280 Ackley vs.. Range performer, though at 400 yards compared to the.270 Winchester and 7mm Rem box 280... Joins David Fortier for an exclusive interview for Shotgun News Remington never introduced new..., Moose, and Federal offers a MeatEater version in their Trophy Copper line of 280 AI cartridges emphasizing! Loads for the cartridges Sharpe & Hart Super came out in 1953 out in 1953 after. Is one of the 280 AI cartridges, emphasizing the 40-degree shoulder angle and 7mm Mag. Same ballistics as a 7mm most rounds would have got that instead but it.... Driving 160-grain bullets to nearly identical speeds and your bullet will drop.!
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