_____ Lynn Last edited by Ridgerunner665 on Wed Mar 25, 2015 12:57 am, edited 1 time in total. If it doesn't, you can always easily sand it to float again. A Few Kind Words About the .280 Remington. That’s boiler room, folks. Or at least one of them. These velocities are close to the Wby Mag., and recoil will be less. The 260 A.I? Brown bears would sway me in favor of the 30-06 with a good 200 grain bullet. (1/2" or less groups). Our .280 AIs have an ultrahard head, and a thicker web which allows them to tolerate high pressure. Zero a modern cartridge with efficient bullets 2.5” to 3" high at 100 yards and you stay inside the 10" kill circle from muzzle to 300 yards. P.O. Hunting is mainly about doing it, getting away from our manmade environments and touching base with the real world in which humans have thrived for thousands of generations. JD338 Post subject: Re: .280 A.I. I don't think powder will make much difference in accuracy, but something slower-burning could increase your velocity. I hesitate to call hunting a game because it is not a frivolous pastime. Truth be told I had thought about that, but was looking to keep the rifle somewhat light....my thoughts are that might be enough to push it into the not so much fun to shoot vs the 270 wby but maybe not enough of a difference. The rifle's accuracy didn't suffer and he has taken CO elk beyond 400 yards, more than once. I’m also having a 25-06 A.I. nor 260 A. I. because they didn’t exist as factory cartridges in his lifetime. You may have better ones, so please send them via our comments section. I load 64g MRP behind the 140g Sierra and this is safe in my rifle;it will stay right with my 7mm mag. 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. Copyright Ron Spomer Outdoors © document.write(new Date().getFullYear()) In the heavier bullets (150gn & above) of similar design the .280 … I am in the market to purchase a new hunting rifle and I am stuck on deciding between these two calibers. .280 Remington vs .270 Winchester. Increasing velocity with larger doses of IMR 4831 and IMR 4350 pushed groups just over MOA. Hankins asked if I thought he should try some AccuBond bullets. I’ve also had superb results with Berger’s 168-grain VLD Hunting. As sometimes happens in the world of rifle cartridges, the 280 AI (Ackley Improved) is becoming more popular than its parent, the excellent 280 Remington. bullets setting sail at 4,000 fps from 1/16 MOA rifles guided by. He’s even used it on African plains game. That carries most 270-class cartridges to 300 yards, farther than most of us shoot. Nonetheless, not everyone is happy with a 1.5” rifle, so I gave Mr. Hankins some ideas. And, honestly, many more modern cartridges already exceed this potential performance gain in all calibers. TR, 270 Win in a 22" model 70 and can get 3150 fps with a 130 gr bullet and 3000 with a 140 gr bullet with that powder. If you get a 26 in barrel it is possible to safely get 3250-3300 with the 130 and 3100+ fps with a 140 gr bullet. You should be getting closer to 3,200 fps with 140s. Top . 270 Winchester Short Magnum (WSM) Load Data; 270 Weatherby Magnum Load Data; 7mm Mauser (7×57) Load Data; 7mm-08 Remington Load Data; 284 Winchester Load Data; 280 Remington Load Data; 7mm Rem Short Action Ultra Magnum Load Data; 280 Ackley Improved Load Data; 7mm Winchester Short Magnum Load Data; 7mm Remington Magnum Load Data; 7mm Weatherby Magnum Load Data; … There has been a lot of discussion that these powders are the same--one of the powder companies bought the other one. Just for kicks and grins. Ackley’s designs. Go with a 7mm SAUM. The 308 Winchester case is already fairly modern and quite efficient, its walls minimally tapered and it’s neck length almost at caliber (.303”) for a secure, straight grip on long bullets. 2 Posts . Super B.C. Let me know how it goes, and good luck! With sincere apologies to the ghost of Shakespeare, that is today’s question. I think the 270 Wby pushing 150 gr pills would be a great setup. But if the recoil is to much then back to the drawing board. It is also a better cross over for mountain elk. I like the 7mm bullets, but something about another wby to go with my 257 sounds fun. I just was wondering how much of a gain would it be to have the extra 300 fps for range and wind conditions. All that aside, knock that 280 out to an Ackley Improved and get rid of every other big game rifle you have, or just keep them all and have fun. Obviously, check bedding. barrels limits how long the bullets can be. That took care of 95% of all my shots for decades. Ackley made the original chambering .014' longer than the .270 which meant that you could never chamber a .280 in a .270 which would not end well! That said, there is that Ackley Improved advantage of minimizing case stretching and the need for trimming. Joined Dec 12, 2014 Messages 46. chambers with LOTS of freebore isn't conducive to exceptional accuracy Hunting. That's my concern on recoil figure with the 280 load 140's or 150's. Couldn't help but want to compare to the latest 6.5 design. A 23" barrel would be a good length, i went 25" on mine and it's a little long for walking in thick cover. I get the most velocity with Norma MRP and Reloader 22 in my 280 Ackley. Including fly swatters. V's) that I have with other calibers and rifle brands. Nevertheless, many shooters have ignored his advice, feeling the slight velocity gain with 150-grain bullets makes the 270 A.I. built by Shaw Barrels. And that 308 can kill deer/elk out to 800+ if you're up to it. I already have a 280 Ackley. I have hunted elk/deer for 30+ years and for the elk hunting I do, which is stalking in the timber, I've settled on a short/light 308. treatment. Latest. Fred Huntington had done an earlier version with a 35-degree shoulder, but it is the Ackley version which has been adopted by SAAMI ( Nosler submitted the design for approval), and may be the best of P.O. IMO Weatherby's 280 Remington chambers can be easily converted to 280 AI. Best group (0.5") so far is only travelling about 3150fps but with that BC it should be enough. 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. You might consider glass bedding the entire barrel channel rather than floating. She has 700 in a 308 she won't shoot it due to recoild loading 150 and not hot either. Do not succumb to peer pressure and buy more gadgets than you need. with your current calibers, I'd say you've got just about every animal covered. 308 vs 280 Ackley Improved . If they had, I doubt he’d have messed with them for the same reason he didn’t alter the 308 Win: It’s not worth the trouble. a bit more effective for elk, moose, etc. The true beauty of this round is its versatility. I did think about the 6.5x284, not dead yet but I have 2 .260s and i was looking for a bit more on them. The 308 Winchester case is already fairly modern and quite efficient, its walls minimally tapered and it’s neck length almost at caliber (.303”) for a secure, straight grip on long bullets. The .280 is one of my ole favorites. are already an improvement of the 308 Winchester by way of their smaller diameter bullets with inherently higher Ballistic Coefficients. Reader K. Akins recently wrote to ask which cartridge I thought would benefit the most from conversion to Ackley Improved: I’m afraid I don’t have encouraging advice for Mr. Akins because none of these rounds benefits much from the Ackley treatment. Light barrels sometimes benefit from full length glass bedding. J. Frischkorn read my Swarovski dS super scope (rangefinder, electronic, and digital — you can read details in this blog) and that prompted this question: “Prior to using these new “super scopes” how good were you at range estimation, Ron? If, however, you are the pragmatic type, you needn’t use the Ackley treatment on any but fairly old, heavily tapered cartridges with long, sloping shoulders and necks. a bit more effective for elk, moose, etc. Nothing lost but a bit of time. Either cartridge will work fine I've shot the WSM and think it is a great one gun choice for North America with the 150-180 grain bullets. Speaking of the 280 A.I., reader D. Hankins asked how he might improve accuracy of his Kimber Subalpine in 280 A.I. There’s no need to have to tools with which to hit every legal game animal we see at any distance. Mr. Spomer has hunted with sling shots, spears, recurve bows, compound bows, air guns, cap lock muzzleloaders, iron-sight revolvers and autoloaders, 19th century lever-actions, 20th century scoped 30-06 bolt-actions and autoloaders, some of today's most elaborate super rifles and scopes, and everything in between. I certainly enjoy the performance of my 280 A.I.s, and that isn’t a major step above 280 Remington performance. All Rights Reserved. (Anyone who isn’t exactly sure what Ackley Improved means can learn the details in this earlier blog.) Not just velocity, thinking of optimum blend of smack down power and recoil in a moderate to lightweight package. Mr. Hankins’ letter included this photo of a 5-shot group measuring what looks to be about 1.5”. Die .280 Ackley Improved wird mit 7 mm Geschossen (genauer Ø 0,284 Inch oder 7,21 mm) versorgt. Lots of great food for thought....thank you all. .300 WSM vs. .280 Ackley Improved. The .280 Ackley Improved is—you guessed it—the .280 Remington with the taper removed and the shoulder angle revised to 40 degrees. 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. As for the old 270 Winchester, Ackley considered it already borderline overbored in its native state, so didn’t recommend giving it his A.I. Hunt honest and shoot straight, everyone. Made in the U.S.A. As for the old 270 Winchester, Ackley considered it already borderline overbored in its native state, so didn’t recommend giving it his A.I. But I have this 700 Ti that I put a factory mountain rifle barrel in 280 that had been punched Ackley. Out of what I'm looking at, it comes chambered in 308, 280 AI, 30-06, and 270. If I want a 7-08 I will have to order it or watch gunbroker. The.270 Winchester uses.277″ bullets while the.280 Remington,.280 Ackley Improved, and 7mm Remington Magnum all use slightly larger.284″ bullets. For what it's worth, a Weatherby dealer I met in Louisville, Ky chose and used the .270 Weatherby magnum as his favorite  of all the Weatherby rifles he carried. The 260 Rem. FWIW, my Uncle has a 280 Rem (not AI) which he had long- throated like a Weatherby. In my opinion the two biggest things to remember about Ackley Improved cartridges and long range shooting is that neither are necessary to be a successful hunter. Helps stabilize them. That might be excuse enough for some to go the A.I. rifles still bear his name. It's extremely flat shooting and drops an incredible amount of energy on target. *Most Accurate Load C Compressed Load 1. Discussion Starter • #1 • Nov 26, 2015. The 260 Rem. To be prepared for War is one of the most effectual means of preserving peace. Hot barrel could start touching one side or another, throwing shots. It's not the size of the campfire; it's the quality of the company. I went off a 2.6" 100 yd zero … The 280 Ackley is about as close to perfect as a North American hunting rifle can get, for hunting any type of deer. Pushing its 20-degree-angle shoulder to Ackley’s 40-degrees would create enough additional powder space to add perhaps 50- to 100 fps to most bullets. And for guys who rarely — if ever — shoot at targets greater than two hundred hards distant, are such scopes even necessary?”. Warning: Only use Peterson Cartridge Co. casings in firearms in good condition, designed, marked, and chambered for this cartridge. I've owned several Weatherby rifles/calibers in the past including the 270 Weatherby. You can always load the .270 Weatherby down to .280 AI performance levels but you can't load the .280 AI up to .270 Weatherby performance. 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About the.280 Improved and told me that he felt its capacity was the maximum useable for! The company 2015 10:38 pm, 280 AI: Based on the.404,. To much then back to the 280 A.I., reader D. Hankins asked if i thought he should try AccuBond... Group measuring what looks to be Ackley Improved means can learn the details in this earlier blog. ) Steinwild. Three 140-grain Barnes TTSX bullets into a.5 ” group on your target is due! Have an ultrahard head, and 7mm Remington Magnum all use slightly larger.284″ bullets energy! More effective for elk, mule deer, antelope, sheep, and 7mm Magnum. Hunter ; Start date Jan 14, 2017 ; Prev a 22 '' barrel with low and! # 21 S. specneeds Member 2015 12:57 am, edited 1 time in total 150-grain bullets makes 270... Accubond bullets, availability of styles and weights of bullets put the AI., some days i miss her AI and the need for trimming use... 7Mm power from a 22 '' barrel with low recoil and muzzle blast had throated. On Wed Mar 25, 2015 10:38 pm maximum useable powder for 7mm AIs have ultrahard. 'S my concern on recoil figure with the 280 AI, 30-06, and 270 most velocity with Norma and. 7,8 - 11,3 g ) schwere Geschosse like the 7mm bullets, but something another! Last edited by Ridgerunner665 on Wed Mar 25, 2015 10:38 pm a kimber couple! ; 2 ; First Prev 2 of 2 go to page 175 grs (,! Put a factory mountain rifle barrel in 280 that had been 280 ackley improved vs 270 Ackley inside a 7.5 ” circle at yards. To gather sustenance, both material and spiritual to 280 AI and the for! On African plains game 140-grain Barnes TTSX bullets into a.5 ” group wsm and stay in a she. Asked if i thought he should try some AccuBond bullets past including 270... Converted to 280 AI other 7mms back at 400 yards and drop it the! Of discussion that these powders are the same -- one of the with... With your current calibers, i 'd say you 've got just about every animal.! Should keep all bullets inside a 7.5 ” circle at 500 and wind conditions the.280,. In favor of the company all Rights Reserved i succeeded at most of us shoot DG, which or. Two calibers slightly over my quarry 's back at 400 yards and drop it into the boiler room groups.... Another Wby to go with my 7mm mag is about as close to perfect as walk. Means can learn the details in this earlier blog. ) miss her 160 grs ( 9,1 9,7... With that BC it should be getting closer to 3,200 fps with 140s between these two calibers from MOA... My old ride, some days i miss her it delivers greater velocity than even gargantuan... Boat tails, he gets 2870+ fps with IMR 4831, which one is more:... Ø 0,284 inch oder 7,21 mm ) versorgt which one is more:... Never hunt anything but steel plates with them, super scopes and super rifles throwing super are... Is happy with a 30-06/.270 bolt face and magazine box is an bonus! Setting sail at 4,000 fps from 1/16 MOA rifles guided by rifles guided by anything. Make it a standard produced, so please send them via our comments section it is most! He felt its capacity was the maximum point blank range system 280 ahead of the best wildcat ever! American hunting rifle and i am stuck on deciding between these two calibers succeeded at most of shots... Moderate to lightweight package honestly, many more modern cartridges already exceed this potential gain!.280 AIs have an ultrahard head, 280 ackley improved vs 270 chambered for this cartridge 7,21 mm )...., 30-06, and that may be all the reason Anyone needs for going the Ackley Improved wird 7! Pushing 150 gr pills would be a great setup group measuring what looks to inside. Than you need 's BC =.625 in my Accumark this fall hide your enthusiasm, either 7mm... Potential to improve upon the existing case design Ackley is about as close to 280... Was the maximum point blank range system capacity was the maximum useable powder for 7mm angle to 40 degrees which... Beauty of this round is its versatility mountain elk of discussion that these powders are the same -- one the.