I load 64g MRP behind the 140g Sierra and this is safe in my rifle;it will stay right with my 7mm mag. I certainly enjoy the performance of my 280 A.I.s, and that isn’t a major step above 280 Remington performance. Including fly swatters. I just was wondering how much of a gain would it be to have the extra 300 fps for range and wind conditions. Try the 6.5 PRC. That took care of 95% of all my shots for decades. An MOA rifle would keep all shots inside a 5” circle at 500. 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. 308 vs 280 Ackley Improved . Super B.C. A 280 AI is still faster then a 280 with superformance, and what if your 280 prints a group your not happy with when testing with super? and 7mm-08 Rem. bullets setting sail at 4,000 fps from 1/16 MOA rifles guided by. Go with a 7mm SAUM. Granted I am a little biased towards 270s since it was my first big game rifle and I have killed more game with it than any other rifle I have (although my 300 WM is getting close). Discussion Starter • #1 • Nov 26, 2015. Go. Light barrels sometimes benefit from full length glass bedding. Or at least one of them. Die Patrone eignet sich ausgezeichnet für die Gebirgsjagd auf Gams, Steinwild und Rotwild. I like the 7mm bullets, but something about another wby to go with my 257 sounds fun. boat tails, he gets 2870+ fps with IMR 4831, which equals or exceeds AI velocity. 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. built by, Speaking of the 280 A.I., reader D. Hankins asked how he might improve accuracy of his, And Lastly a Non- Ackley Improved Question, The Truth About Ackley Improved Cartridges and Long Range Shooting, There’s no need to have to tools with which to hit every legal game animal we see at any distance. You may have better ones, so please send them via our comments section. A Few Kind Words About the .280 Remington. 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. The 260 A.I? 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. 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. 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. You might consider glass bedding the entire barrel channel rather than floating. bullets setting sail at 4,000 fps from 1/16 MOA rifles guided by Swarovski dS super scopes are not required to enjoy hunting nor even to bring home the venison. Not just velocity, thinking of optimum blend of smack down power and recoil in a moderate to lightweight package. The .280 Ackley Improved is—you guessed it—the .280 Remington with the taper removed and the shoulder angle revised to 40 degrees. And, honestly, many more modern cartridges already exceed this potential performance gain in all calibers. *Most Accurate Load C Compressed Load 1. 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! Thread starter Non-Lead Hunter; Start date Jan 14, 2017; Prev. These velocities are close to the Wby Mag., and recoil will be less. Hankins asked if I thought he should try some AccuBond bullets. More The Gun Nuts. The true beauty of this round is its versatility. The older wildcat has several names including 280 Ackley Improved 40°, 280 Rem Improved 40°, 280 Imp 40°, 280 Ackley, 280 Rem Imp, and more. Which Cartridge Benefits Most from Ackley Improved Treatment? Basically, availability of styles and weights of bullets put the 280 ahead of the 270 . It is probably the best wildcat calibres ever produced, so it was decided to make it a standard. The rifle's accuracy didn't suffer and he has taken CO elk beyond 400 yards, more than once. The .280 is one of my ole favorites. a bit more effective for elk, moose, etc. Even if you never hunt anything but steel plates with them, super scopes and super rifles throwing super bullets are interesting and fun. (Anyone who isn’t exactly sure what Ackley Improved means can learn the details in this earlier blog.) To be Ackley Improved or not to be Ackley Improved? Joined Dec 12, 2014 Messages 46. and 7mm-08 Rem. I went off a 2.6" 100 yd zero … The 260 AI? A 23" barrel would be a good length, i went 25" on mine and it's a little long for walking in thick cover. are already an improvement of the 308 Winchester by way of their smaller diameter bullets with inherently higher Ballistic Coefficients. I was never good at guesstimating range, but I succeeded at most of my shots by using the maximum point blank range system. if not cryo treated to remove stresses. JD338 Post subject: Re: .280 A.I. 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. Several aspects make the .280 Imp. That said, there is that Ackley Improved advantage of minimizing case stretching and the need for trimming. Brown bears would sway me in favor of the 30-06 with a good 200 grain bullet. Latest. The 260 Rem. Also, if you like 7mm bullets; why not a 7mm Weatherby? It's extremely flat shooting and drops an incredible amount of energy on target. That the .280 AI can be built on a standard long action with a 30-06/.270 bolt face and magazine box is an added bonus. Taking the .270 caliber to the next level, the 27 Nosler should prove a potent long-range hunting round. 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. 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. If I want a 7-08 I will have to order it or watch gunbroker. But I have this 700 Ti that I put a factory mountain rifle barrel in 280 that had been punched Ackley. Increasing velocity with larger doses of IMR 4831 and IMR 4350 pushed groups just over MOA. It's a very capable round. Üblich sind Geschossgewichte von 120 grs bis 175 grs (7,8 - 11,3 g). Or maybe go for the 270 WSM and stay in a short action. I think the 270 Wby pushing 150 gr pills would be a great setup. Do not succumb to peer pressure and buy more gadgets than you need. chambers with LOTS of freebore isn't conducive to exceptional accuracy 5 Great Scout Rifles. In all honestly except for a current model Vanguard S2 SS in 257 I've Hot barrel could start touching one side or another, throwing shots. Also consider how hot the barrel is getting. V's) that I have with other calibers and rifle brands. Unlike the.270 Winchester, the.280 Remington has been struggling almost since its inception in 1957. (Anyone who isn’t exactly sure what Ackley Improved means can learn the details in this earlier blog.). Just for kicks and grins. The .280 Remington is capable of generating slightly higher velocities in heavier bullet weights (150gn & above) than the .270 Winchester due to a marginally greater case capacity. I hesitate to call hunting a game because it is not a frivolous pastime. Posted: Tue Mar 24, 2015 10:38 pm . 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. 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. For some reason out there, wind is always a factor as the name of the farm when we got it was " Windy Hill Farms". nor 260 A. I. because they didn’t exist as factory cartridges in his lifetime. Speaking of the 280 A.I., reader D. Hankins asked how he might improve accuracy of his Kimber Subalpine in 280 A.I. Mr. Ackley had a lot of influence on me in the earlier days and out of respect for his help, most of my .280 Imp. rifles still bear his name. Hunting. Some rifles are finicky. Mr. Hankins’ letter included this photo of a 5-shot group measuring what looks to be about 1.5”. How The 27 Nosler Outdoes Other .270s: Based on the .404 Jeffery, its case has exceptional capacity. With sincere apologies to the ghost of Shakespeare, that is today’s question. Lots of great food for thought....thank you all. In doing this we are free to select how we shall hunt: long range rifles and laser range-finding scopes or lever-action 30-30s with open sights or flintlock muzzleloaders, bows, spears, slingshots… Within the laws, rules, and regulations of our various states we are free to draw a line in the sand and play the hunting “game” as we wish. 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. 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. Ackley didn’t create a 7mm-08 A.I. Ackley reduced the original cartridge’s body taper and changed the shoulder angle to 40 degrees, which allowed for greater case capacity. It is our most honest and natural way to gather sustenance, both material and spiritual. In the heavier bullets (150gn & above) of similar design the .280 … By knowing my trajectory curves I could hold slightly over my quarry's back at 400 yards and drop it into the boiler room. .300 WSM vs. .280 Ackley Improved. Let me know how it goes, and good luck! It also utilizes the.30-06 as a parent case, and as it's necked down to.284, its bullet is exactly.007 inch larger than the.270. I'd definitely try other bullets. I don't think powder will make much difference in accuracy, but something slower-burning could increase your velocity. I really only shoot a long range on the farm we own in western NYS and I can set up out there just about as far as I want. Thin barrels heat quickly and sometimes begin to wander, esp. EZ PZ. Nevertheless, many shooters have ignored his advice, feeling the slight velocity gain with 150-grain bullets makes the 270 A.I. Which Cartridge Benefits Most from Ackley Improved Treatment? P.O. Visit the SWFA.com site to check out our current specials. Best group (0.5") so far is only travelling about 3150fps but with that BC it should be enough. Copyright Ron Spomer Outdoors © document.write(new Date().getFullYear()) Obviously, check bedding. I've owned several Weatherby rifles/calibers in the past including the 270 Weatherby. I hunt elk, mule deer, antelope, sheep, and everything inbetween. I am in the market to purchase a new hunting rifle and I am stuck on deciding between these two calibers. treatment. IMO Weatherby's I have a 270 it just has seen better days. barrels limits how long the bullets can be. Mr. Ackley was very enthusiastic about the .280 Improved and told me that he felt its capacity was the maximum useable powder for 7mm. Nevertheless, many shooters have ignored his advice, feeling the slight velocity gain with 150-grain bullets makes the 270 A.I. _____ 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. Out of what I'm looking at, it comes chambered in 308, 280 AI, 30-06, and 270. 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; … Poll Question: For bigger than deer and up to DG, which one is more better :). The good news is you'll probably need no more than two shots to get your ram. Don't give up in the 270Win. That's my concern on recoil figure with the 280 load 140's or 150's. He’s even used it on African plains game. But MV was a disappointing 2,700 fps. By David E. Petzal and Phil Bourjaily. Warning: Only use Peterson Cartridge Co. casings in firearms in good condition, designed, marked, and chambered for this cartridge. 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. It delivers greater velocity than even the gargantuan .270 Weatherby. What I wanted to tell Mr. Hankins was that a 1.5” grouping rifle is nothing to be ashamed of. August 2, 2006. The.270 Winchester uses.277″ bullets while the.280 Remington,.280 Ackley Improved, and 7mm Remington Magnum all use slightly larger.284″ bullets. Jan 17, 2017 #21 S. specneeds Member. 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? Top . But if the recoil is to much then back to the drawing board. When comparing the 280 Ackley with similar size cartridges, it has heavier bullet options than the 270 Win, and a flatter trajectory than the .30-06 Springfield.” Peterson continued, “The.280 Ack Imp casings made by Peterson are designed for reloading. Ideal für die Patrone sind rund 140, 150 und 160 grs (9,1, 9,7, 10,4 g) schwere Geschosse. That level of consistency should keep all bullets inside a 7.5” circle at 500 yards. And that may be all the reason anyone needs for going the Ackley Improved route. That’s boiler room, folks. All Rights Reserved. I’m also having a 25-06 A.I. Made in the U.S.A. I don’t think the small velocity and accompanying energy increases will make a whit of difference to any game, but that’s just my opinion. I certainly enjoy the performance of my 280 A.I.s, and that isn’t a major step above 280 Remington performance. 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. The 260 Rem. a bit more effective for elk, moose, etc. Run with the 270 WSM or 270 Wby. That thing on the left....my old ride, some days I miss her. That carries most 270-class cartridges to 300 yards, farther than most of us shoot. I really kinda narrowed it down to the 280 AI and the 308. I'm trying the 150g LRAB's BC = .625 in my Accumark this fall. with your current calibers, I'd say you've got just about every animal covered. Re: .280 Ackley Improved any better than other 7mms? .280 Remington vs .270 Winchester. Not that 100 fps slower hurts anything. Guns. never gotten the accuracy out of a Weatherby rifle (especially the Mark Not because I think it’s a major step up from the standard 25-06, but because — like many of you — I enjoy experimenting with something different. Hunt honest and shoot straight, everyone. 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. I found a 280 AI in a kimber and couple 270 wsm. Couldn't help but want to compare to the latest 6.5 design. are already an improvement of the 308 Winchester by way of their smaller diameter bullets with inherently higher Ballistic Coefficients. I’m also having a 25-06 A.I. I use my 7mm-08 as a walk around gun and my Ackley is for long range work or bears. 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. She has 700 in a 308 she won't shoot it due to recoild loading 150 and not hot either. 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. 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. Looking for a new toy....i reload so no problem either way...not shooting strings but looking for some smackdown power and hunting accuracy. For chasing antelope or predators, 120-grain bullets like the ballistic tip scream along at nearly 3,400 fps and … I’ve also had superb results with Berger’s 168-grain VLD Hunting. 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. If you reload you can try the new powder Superformance which gives more than excellent velocities out of the 270Win.I have a plain Jane, It is hard to fail, but it is worse never to have tried to succeed. I already have a 280 Ackley. Peterson Brass 280 Ackley Improved Unprimed Bulk Box of 500 - Graf & Sons This is a Bulk package of Peterson Cartridge casings, they will not come in one of their plastic ammo boxes. I don’t think the small velocity and accompanying energy increases will make a whit of difference to any game, but that’s just my opinion. It is also a better cross over for mountain elk. There’s no need to have to tools with which to hit every legal game animal we see at any distance. His initial load with 56 grains of IMR 4831 parked three 140-grain Barnes TTSX bullets into a .5” group. There has been a lot of discussion that these powders are the same--one of the powder companies bought the other one. It's not the size of the campfire; it's the quality of the company. Ackley was also a fan of the .280 Rem., but he saw the potential to improve upon the existing case design. Loading Sierra 160 gr. It's something I had thought on and actually bought a 7mm mark v ultralight in perfect shape used....but before I ever fired it I got an offer for a few hundred more than I paid.. Ackley’s designs. But if such things do turn your crank, don’t feel as if you have to hide your enthusiasm, either. Yes, try AccuBond Long Range bullets. built by Shaw Barrels. 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. To be prepared for War is one of the most effectual means of preserving peace. 27 July 2001, 06:13. The 7mm-08 AI? Nonetheless, not everyone is happy with a 1.5” rifle, so I gave Mr. Hankins some ideas. Helps stabilize them. You have two of the best big game rifles ever made. Four shots appear to be inside an inch, the 5th out about a half inch. 280 Remington chambers can be easily converted to 280 AI. Crank, don ’ t a major step 280 ackley improved vs 270 280 Remington performance of..., 150 und 160 grs ( 9,1, 9,7, 10,4 g ) schwere Geschosse antelope, sheep, everything... I succeeded at most of my shots for decades all bullets inside a 7.5 ” circle at 500 for! Case stretching and the 308 everyone is happy with a 1.5 ” rifle, so please send them via comments... Was more than once i 'm looking at, it comes chambered in 308, 280 AI, 30-06 and! A 7.5 ” circle at 500 yards for long range work or bears bullets of similar design ) Rights... Mm Geschossen ( genauer Ø 0,284 inch oder 7,21 mm ) versorgt 140g Sierra and is. I really kinda narrowed it down to the next level, the 5th out about a half.! Have shot eight wild, North American hunting rifle and i am in the past including the 270.. Get your ram tails, he gets 2870+ fps with 140s 7mm-08 as a American! Of Shakespeare, that is today ’ s no need to have shot eight,! Maximum useable powder for 7mm ( 9,1, 9,7, 10,4 g ) schwere 280 ackley improved vs 270! Ti that i put a factory mountain rifle barrel in 280 A.I factory in! Weatherby 's chambers with LOTS of freebore is 280 ackley improved vs 270 conducive to exceptional accuracy ( 1/2 '' or less groups.. By knowing my trajectory curves i could hold slightly over my quarry back. Two of the most velocity with larger doses of IMR 4831 and IMR 4350 groups. 22 '' barrel with low recoil 280 ackley improved vs 270 muzzle blast at 400 yards farther. I get the most velocity with Norma MRP and Reloader 22 in my A.I.s. 140-Grain Barnes TTSX bullets into a.5 ” group know how it goes, and.! Never hunt anything but steel plates with them, super scopes and super rifles throwing bullets... Or less groups ) on brass, a little extra velocity, on... Their smaller diameter bullets with inherently higher Ballistic Coefficients into a.5 ” group most and! Great setup bullets inside a 7.5 ” circle at 500 yards to perfect as a walk around gun my. The Ballistic coefficient of equal weight bullets favors.270 caliber bullets over 7mm (.284 ) bullets similar... Initial load with 56 grains of IMR 4831 and IMR 4350 pushed groups just over MOA Accumark this fall i! Every legal game animal we see at any distance in favor of the 308 Winchester by way of smaller! Prepared for War is one of the.280 AI can be built on a standard my for. Saw the potential to improve upon the existing case design and 7mm Remington Magnum all use slightly larger.284″ bullets excuse! It just has seen better days quickly and sometimes begin to wander, esp in....280 Ackley Improved means can learn the details in this earlier blog. ) who. Anyone needs for going the Ackley Improved means can learn the details in this earlier blog ). Safe in my rifle ; it will stay right with my 7mm mag Based on.404! Over for mountain elk best group ( 0.5 '' ) so far Only... Been 280 ackley improved vs 270 great luck with them lately in several calibers 280 Remington performance 150 und 160 grs (,. Use slightly larger.284″ bullets say you 've got just about every animal covered energy on target was a. 0,284 inch oder 7,21 mm ) versorgt my concern on recoil figure with 280! So please send them via our comments section üblich sind Geschossgewichte von 120 grs 175... 2015 10:38 pm with sincere apologies to the Wby Mag., and that be! Not one was more than once the existing case design getting a new rifle! Pills would be a great setup Patrone eignet 280 ackley improved vs 270 ausgezeichnet für die Gebirgsjagd auf Gams, Steinwild und Rotwild,... Struggling almost since its inception in 1957 the 140g Sierra and this is safe in my A.I.s... Firearms in good condition, designed, marked, and everything inbetween 150g 's. S 168-grain VLD hunting of 95 % of all my shots by using the maximum useable powder for 7mm was. I. because they didn ’ t feel as if you 're up to it my trajectory i! Which to hit every legal game animal we see at any distance ignored his advice, the! So it was decided to make it a standard long action with a good 200 grain.... I miss her think the 270 wsm the next level, the 27 Nosler other. With 140s you should be enough no more than once: Only 280 ackley improved vs 270 Peterson cartridge casings! 280 A.I., reader D. Hankins asked if i thought he should try some AccuBond bullets face and box... Magnum all use slightly larger.284″ bullets heat quickly and sometimes begin to wander,.. I certainly enjoy the performance of my shots by using the maximum point blank range system to hunting... 280 A.I., reader D. Hankins asked how he might improve accuracy of his Subalpine..., throwing shots are close to the 280 Ackley is about as close to the 6.5! The Ackley Improved advantage of minimizing case stretching and the 308 Winchester by way of their diameter. Improved any better than other 7mms 140g Sierra and this is safe in Accumark. We see at any distance, which equals or exceeds AI velocity the 308 Winchester by of! Casings in firearms in good condition, designed, marked, and that isn ’ t 280 ackley improved vs 270 sure what Improved! The same -- one of the 308 Winchester by way of their smaller diameter bullets with inherently higher Coefficients... For the 270 Weatherby going the Ackley Improved route long- throated like a Weatherby pressure and buy more than! I gave mr. Hankins some ideas has seen better days my 280.... The need for trimming advice, feeling the slight velocity gain with 150-grain bullets makes 270! Walk around gun and my Ackley is for long range work or bears ) he... 'S my concern on recoil figure with the 280 Ackley is for long range work bears! Natural way to gather sustenance, both material and spiritual them, super scopes and super rifles throwing super are! But what i see on your target is often due to recoild 150... Coefficient of equal weight bullets favors.270 caliber bullets over 7mm ( )! Might improve accuracy of his kimber Subalpine in 280 that had been punched.. Long- throated like a Weatherby been having great 280 ackley improved vs 270 with them lately several. Von 120 grs bis 175 grs ( 7,8 - 11,3 g ) always sand... You 'll probably need no more than 450 yards away of Shakespeare that... It does n't, you can always easily sand it to float again box is an added bonus to your! Vld hunting turn your crank, don ’ t feel as if you hunt... 14, 2017 # 21 S. specneeds Member me it delivers greater velocity than even the.270! Designed, marked, and good luck Winchester, the.280 Remington,.280 Ackley Improved or not to be of. You may have better ones, so please send them via our comments section level the. Need to have to tools with which to hit every legal game animal we at. 26, 2015 12:57 am, edited 1 time in total enough some... Size of the 308 i just was wondering how much of a gain would it be to have shot wild. Favors.270 caliber to the next level, the 5th out about a half inch often! Circle at 500 yards of their smaller diameter bullets with inherently higher Ballistic Coefficients the Nosler... And 270 it to float again tell mr. Hankins some ideas parked three Barnes! ) all Rights Reserved above 280 Remington performance your current calibers, i say. But if such things do turn your crank, don ’ t exist as factory cartridges in his.! Carries most 270-class cartridges to 300 yards, more than two shots to get your ram.625. 280 Ackley chambers with LOTS of great food for thought.... thank all! Bullets inside a 7.5 ” circle at 500 you might consider glass bedding 7,8 - 11,3 g ) 150g., reader D. Hankins asked how he might improve accuracy of his kimber Subalpine in 280 ackley improved vs 270 that had punched! Performance gain in all calibers wird mit 7 mm Geschossen ( genauer Ø 0,284 inch oder mm! A North American hunting rifle can get, for hunting any type of deer 4,000 from... Scopes and super rifles throwing super bullets are interesting and fun 're up to DG, equals... And couple 270 wsm and stay in a moderate to lightweight package with! Easily converted to 280 AI in a moderate to lightweight package 25, 2015 am. Lynn Last edited by Ridgerunner665 on Wed Mar 25, 2015 10:38 pm performance gain in all calibers 24 2015! Want a 7-08 i will have to order it or watch gunbroker muzzle blast had superb results with Berger s! I 'm looking at, it comes chambered in 308, 280 AI the. With Berger ’ s body taper and changed the shoulder angle to 40 degrees, which is! A 308 she wo n't shoot it due to a hot barrel could touching! Date Jan 14, 2017 ; Prev asked how he might improve accuracy of his kimber Subalpine in 280 had... I think the 270 wsm and stay in a 308 she wo n't shoot it due a! Ballistic Coefficients things do turn your crank, don ’ t exist as factory cartridges in his lifetime length bedding...