7mm prc vs 280 ackley improved

Mar 10, 2009. #3. I prefer the 280 AI, as you get close to the same velocities as the 7mm rem but with much less recoil and better barrel life. Also it is my opinion that the 280 AI is MUCH less finicky than the 7mm rem. Better accuracy potential, better life, less recoil more than makes up for a few FPS the 7mm rem may offer.

It outperforms the .280 Remington (also known as the 7mm-06 and the 7mm Express), ... the .280 Ackley Improved can remain supersonic out to 1,400 yards. ... 6.5 PRC vs 6.5 Creedmoor: Battle of the ...In a 22in barrel the 280ai and 284 are going to shoot damn near the same speed, the 7PRC, also with a 22in barrel, will be about 100fps faster. IMO, brass quality definitely favors the 284 because even if you can't find Lapua 284 brass you can generally find Lapua 6.5-284 brass and it's an easy neck up from .264 to .284.A space hotel that looks like a ferris wheel is planned to open in 2027, and it will cost a whopping $5 million for a three-night-stay. By 2027, “social distancing” will hopefully ...The 280 Ackley Improved is more efficient, but it is a niche cartridge that is harder to find and more expensive. Staying Power and Cool Factor. The 7mm PRC has the potential to become the next 7mm Magnum cartridge, while the 280 Ackley Improved is a niche cartridge that is gaining popularity. In terms of cool factor, the 280 Ackley Improved ...Aug 16, 2021 ... To learn more about popular hunting calibers like the .270 Winchester, .280 Remington, 280 Ackley Improved and 7mm Remington, ...Head to Head: 7mm PRC vs. 7mm Remington Magnum. Review: Henry Homesteader 9mm Carbine. 10 Most Versatile Long-Range Hunting Cartridges. ... Head to Head: .280 Ackley Improved vs. 28 Nosler. The 7mm cartridges are a fantastic all-around choice for any hunter pursuing our most common species. Between the .280 Ackley Improved …Jan 12, 2020 · Thanks to the good advice provided me in this thread, the 6.5 prc build turned out great and I am thoroughly enjoying shooting it. This was 2 weeks ago shooting steel at 428 yards in a new cut-over against the far wood line. That said, the 280 AI itch persisted and I am having one of my 30-06's rebarreled to 280AI.

Jan 30, 2024 · There are those who feel the 7mm Rem. is a bit overbore, and that the bore diameter is better served by the .280 Remington case, or perhaps the .280 Ackley Improved variant, but there are also thousands of hunters who sling a 7mm Rem. Mag. rifle over their shoulder each season and get to work. The .270 Winchester, the .270 Weatherby Magnum and .270 WSM all use a 1:10-inch twist rate, which won’t stabilize most bullets heavier than 150 grains. Enter the 6.8 Western, released at the end of 2020. While the concept of a .270 bullet driven at higher velocities had certainly been tried with both the .270 Weatherby Magnum (released 1945 ...The .280 Ackley — named after noted gun writer, gunsmith and wildcatter Parker Otto Ackley (1903-1989) — could be described as a mild-mannered deer cartridge with surprisingly hot performance. In the 1996 edition of Gun Digest, author Rob Lucas compared it to one of the hottest 7mm wildcats of the day, the 7mm STW.Consider these scenarios... (listen) It behooves hunters to have a rifle and cartridge suitable for any task. These cartridges are two of the best for all-around work on the broad spectrum of Western big game. .280 Ackley Improved vs. 7mm Remington Magnum HISTORY 7mm Rem Mag .280 Ackley Improved WHY IS THE 7MM/.284 CALIBER SO SIGNIFICANT?Because of the higher velocity, the 6.5 PRC has a definite advantage in the energy department, delivering 300 to 400 ft-lbs. more than the Creedmoor at any given range. If you want to use a 6.5mm cartridge for larger species like elk in addition to deer and antelope, the PRC makes perfect sense. If you want a cartridge for whitetails and mule ...The 280 AI is Ackley's version of the 280 Remington, a standalone cartridge based on the 30-06 Springfield case, necked down to accept .284-inch bullets. Necking down the cartridge allows for a wide range of bullet choices that are often ballistically superior. This makes the 280 AI suitable for various applications, from long-range target ...

If you didn't have the action I would tell you to go to a magnum bolt face round. Other option to consider is one of the 284 improved cartridges (284 Shehane for example), but that has its own problems. For the velocity you want, 280 AI should get you close. I would count on 2700-2750 from a 24" tube.SHOW NOTES. Meet the 6.8 Western: Browning's new high-performance, high-efficiency .270 magnum. This is the cartridge that host JvB used for a solo, drop-camp Alaska caribou hunt during September 2020. 1:7.5 rifling twist rate Engineered for efficiency and consistency True short-action magnum cartridge Optimized for heavy, high-BC …A good friend is a huge ackley fan. Many .260 and .280 ackley rifles including a scout rifle in 280AI . His 1st Elk was at 702 taken with 280AI @3000 FPS with Berger 168gr Classic Hunter and R26. One and done. Another hunter in camp also ran a 280AI w/ same load and took his bull at 340y. 1 shot.It will offer a velocity advantage of about 300 fps or so over the 7x57mm Mauser with most bullet weights, and the most popular choice for the .280 Remington seems to be the 140-, 150- and 160-grain slugs. Most major ammunition manufacturers offer at least one load for the .280 Remington, though it does still trail behind the .270 and .30-06.Below, you can see the ballistics for the .280 Ackley compared to 7mm Rem Mag and .270 Win. Ballistics charts of the 280 AI, 7mm Rem Mag, and .270 Win. Outdoor Life. The Ackley represents a nice middle ground, the distinctive 40-degree shoulder angle allows for ample powder capacity, but it burns efficiently, producing excellent velocities with ...

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Apr 17, 2024 · Below, you can see the ballistics for the .280 Ackley compared to 7mm Rem Mag and .270 Win. Ballistics charts of the 280 AI, 7mm Rem Mag, and .270 Win. Outdoor Life. The Ackley represents a nice middle ground, the distinctive 40-degree shoulder angle allows for ample powder capacity, but it burns efficiently, producing excellent velocities with ... Nov 4, 2023 ... Note: We were at a safe location following all safety rules! Today on Alaskan Ballistics we're comparing the .280 Ackley Improved vs. the ...280 ACKLEY IMPROVED $ 109.00. The 280 AI was developed by Parker Otto (P.O.) Ackley. P.O. was a lot like Roy Weatherby, a wildcatter who was in search of better solutions. His 280 AI set out to improve the .280 Rem by steeping the shoulder to 40 degrees to increase powder capacity. ... The 7MM PRC was introduced in 2022 and is …Dec 10, 2020 · If you didn't have the action I would tell you to go to a magnum bolt face round. Other option to consider is one of the 284 improved cartridges (284 Shehane for example), but that has its own problems. For the velocity you want, 280 AI should get you close. I would count on 2700-2750 from a 24" tube. The 280 Ackley Improved Ammo will offer 100 extra fps with an equal barrel length than the 280 Remington with a 140-grain bullet. The real advantage of the 280 Ackley Improved Ammo lies in its versatility. When you’re chasing antelopes or predators, 120-grain bullets are pretty effective for a clean kill at nearly 3,400 feet per second. This list of the best rifle cartridges for elk hunting starts with the welterweights and moves up to the heavy hitters. 6.5 Creedmoor. .270 Winchester. .280 Ackley Improved. 7mm Remington Magnu n ...

In general, a capital improvement is a one-time expenditure for physical assets such as buildings, land, construction, landscaping or major equipment. In general, a capital improve...Mar 30, 2023 · You do realize that the 280 AI as with the 7mm SAUM nearly mimics the 7RM and that the only difference ballistically between the 7 PRC and the 7 RM is the factory barrel twist rate. When you add .25 free bore to the 280 AI you extend the case capacity to around 68.0. You realize that allows you to nearly duplicate 7 PRC ballistics right. 280 AI: 180: 2,760: 3,044: Long: 0.284: The Precision Rifle Cartridge line is now broad enough that for many hunting uses, shooters will have a tough time deciding between the 6.5 PRC, 7 PRC, and 300 PRC. ... The 7mm PRC will beat the following cartridges in sales over the next 20 years: 280AI, Gunwerks LRM, and the 7mm Rem Mag. Personally, I ...The MeatEater Edition rifle is built on Weatherby’s newest bolt action rifle platform, the Model 307. Designed and tested by the MeatEater crew, this upgraded version is a 2-Lug, fully cylindrical action compatible with many aftermarket accessories. It can accommodate the vast offerings of stocks, triggers, rails, mounts, and magazines that exist in today’s …In what could be one of Twitter’s more significant changes since doubling the character count from 140 to 280 characters, the company is preparing to launch a new feature that woul...I’ve got an ackley (two actually) and a 6.5 prc. The prc shoots fine, but I go to the ackley every time. First 280 was built with a 25” tube, next has a 26” proof carbon. Gosh it looks long with the break… I’ve never had to look for a deer shot with my 280ai. 195 Berger’s have dropped 8 or 9 right where they were shot.That’s right. The .28 Nosler has the same 3.340-inch maximum cartridge overall length as the .30-06, yet it generates the same muzzle velocities as the 7mm RUM. Both the .28 Nosler and 7mm RUM are rated at 65,000 psi maximum pressure, same as the .22-250 Rem. and .300 Win. Mag. Load a 175-grain bullet atop 92 grains of Retumbo in …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. The true beauty of this round is its versatility. 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.

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I’ve also chosen two of the more aerodynamic loads: the Hornady 20-grain V-Max for the .17 HMR, and the Hornady 30-grain V-Max load for the .22 WMR. Using a 100-yard zero for both—even the slower .22 Magnum will only have a rise of 0.7-inch—you’ll find the .17 HMR hitting 3.1 inches low at 150 yards, and the .22 WMR hitting 4.8 inches low.The PRC makes modest improvements to the Creedmoor’s velocity and power, but what really attracts long-range aficionados is its factory twist rate. Cartridge designers specify barrel twist rates when submitting their designs to SAAMI, and the PRC comes with a 1:8 twist, one of the fastest available.In this video I compare two modern designed cartridges to see which one comes out on top. Hope you enjoy the video!Recoil is firmer than the 6.5 cartridges but less than the 7mm Rem. Mag. The .280 Ackley sends a .284-inch diameter 140- to 175-grain projectile downrange at velocities ranging from 2850 to 3150 fps. While it used to be a wildcat cartridge, Nosler, Hornady and Federal now build factory .280 Ackley Improved ammo. My personal …May 9, 2023 · Zeroing both at 200 yards, the .280 AI will be 6.9 inches low at 300 yards, 19.8 inches low at 400, and 39.3 inches low at 500 yards. The 28 Nosler will strike 5.4 inches low at 300 yards, 15.5 inches low at 400 yards, and 30.9 inches low at the 500-yard mark. The .280 AI’s trajectory mimics the classic .300 Winchester Magnum loads, while the ... The .30-06 Springfield—and its predecessor the .30-03 Springfield—are responsible for a great number of cartridges, both wildcat and commercially accepted. Some have become undeniable classics in their own right, and here I’m talking about the .270 Winchester, .25-06 Remington and .280 Remington, and others have a small yet fervent …

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I was surprised the 160 accubond dropped below 1500 ft. lbs. past 500 yards when started at 2920. I'm shooting 162 ELD-X out of my 7mm-08 at 2650 and could run them at 2700 if I wanted. Those are only 100 ft. lbs. behind the .280 AI/Accubond combo at 500 yards, with probably 2/3 the recoil. Really makes me appreciate the high BC of those ELD-X ...The 280 AI requires a standard bolt face and a long action stroke. Both the 280 AI and the 7mmRM would require long magazines to match the bolt stroke. Probably easier just to stick with the magnums: 6.5 PRC if your current action is medium or short stroke. 7mm RM if your current action stroke is long.Mar 17, 2011 · Mild-mannered but wicked, the .280 Ackley Improved is a virtuoso of a cartridge. By Joseph von Benedikt. PHOTOS BY MIKE ANSCHUETZ. I'll stick my neck out and say it: I think the .280 Ackley Improved cartridge is the finest of the flock and gives shooters more for their effort than any other wildcat. (Some may argue that it's no longer a wildcat ... 280 Ackley Improved fast twist with .25 of free bore. 195 Berger @ 2900, 175 ABLR @ 3000 - 3050 fps. Coal is 3.30 - 3.75.Rifle Recoil Table. For every action there is an equal and opposite reaction; that is one of the physical laws of our universe. This means that the momentum of a rifle's reaction will exactly equal the momentum of the bullet and powder gasses ejected from the barrel. In the shooting sports we call that reaction recoil or "kick."Jan 14, 2017 · To answer some of the questions on why I narrowed it down to only those two calibers. The .270WSM or WIN is a great cartridge, but very limited grain weight choices compared to the 7mm's. No complaints on the 7mm-08 either, however my shooting range is out to 500 yards and would like a little more velocity than the 7mm-08 provides at that range. When it comes to buying that spooky-ish-looking Victorian mansion, the word is 'buyer beware.' Advertisement Helen Ackley and her family lived with ghosts for years in their turn-o...Because of the higher velocity, the 6.5 PRC has a definite advantage in the energy department, delivering 300 to 400 ft-lbs. more than the Creedmoor at any given range. If you want to use a 6.5mm cartridge for larger species like elk in addition to deer and antelope, the PRC makes perfect sense. If you want a cartridge for whitetails and mule ...Ranging from brand-new to over a century old, all ten of these cartridges are at the top of their class. From left: 6.5-284 Norma, 7mm Rem. Mag., 28 Nosler, .300 Win. Mag., .25-06 Rem., .280 Ackley Improved, .338 Win. Mag., .270 Win., .30-06 Springfield, 6.5 Creedmoor. The following is a list of cartridges that have earned the right to ... ….

Comparing a 140eldm or 143 eldx to a 162 eldx, the 6.5 wins or it’s a wash. With Berger you have to go up to 168 gr 7mm bullets to beat their 140 EH/HT/VLD. For Sierras, a 6.5mm 140 gameking has a significantly higher bc than the 7mm 160. The Nosler seems to be an anomaly in this case as far as the 160gr 7mm having a higher bc than the 140gr 6.5.Ackley reduced the original cartridge’s body taper and changed the shoulder angle to 40 degrees, which allowed for greater case capacity. This new wildcat, which became known as the .280 Ackley Improved 40-Degree Shoulder, beat .280 Rem ballistics by about 100 fps, which gave it energy and trajectory figures that nipped at the heels of …Meet the 6.8 Western: Browning's new high-performance, high-efficiency .270 magnum. This is the cartridge that host JvB used for a solo, drop-camp Alaska caribou hunt during September 2020. ALSO: Browning adds the .280 Ackley Improved cartridge to the X-Bolt rifle line. Gear spotlight: Browning's new "Recoil Hawg" muzzle brake.280 Ackley Improved Vs. 7mm Remington Magnum. According to Nosler reloading data, although the 7mm Remington Magnum does not provide more than 50 fps over the .280 AI with similar projectiles, the latter cartridge holds less powder in its case, thus it is considered more efficient. However, the published data is provided from a .280 AI tested ...280 ACKLEY IMPROVED. 280 ACKLEY IMPROVED LH. 300 WBY MAG. 300 WBY MAG LH. 308 WIN. 308 WIN LH. 338 WBY RPM. 338 WBY RPM LH. 6.5 CREEDMOOR. 6.5 CREEDMOOR LH. 6.5 WBY RPM. 6.5 WBY RPM LH. 6.5-300 WBY MAG. 6.5-300 WBY MAG LH. 28 NOSLER. 28 NOSLER LH. 7MM PRC. 7MM PRC LH. Clear: Mark V® …Stainless Steel Dial Caliper. $51.99. Add to Cart. These two die-sets are intended for reloading bottleneck cases, and consist of a Full-Length Sizer Die with an Expander-Decapping Unit, and a Seater Die with Bullet Seater Plug. The Full-Length Sizer Die brings the case to SAAMI minimum cartridge dimensions.The PRC makes modest improvements to the Creedmoor’s velocity and power, but what really attracts long-range aficionados is its factory twist rate. Cartridge designers specify barrel twist rates when submitting their designs to SAAMI, and the PRC comes with a 1:8 twist, one of the fastest available.PHoto shows 308 family of cartridges including 7mm-08, 260 Rem, and 243 Win. none of which are recommended for Ackley Improved. 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. I’m afraid I don’t … 7mm prc vs 280 ackley improved, PHoto shows 308 family of cartridges including 7mm-08, 260 Rem, and 243 Win. none of which are recommended for Ackley Improved. 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. I’m afraid I don’t …, Jul 28, 2023 ... In this video I talk about the announcement of Weatherby making factory ammo for the 6.5 PRC, 280 AI, 7mm PRC, 28 Nosler and 300 PRC., Ackley was gathering more industry support and has been around for decades. You can buy 280 remington and shoot in your ackely in a pinch, then reload the fire formed brass. I can still carry an extra round over the PRC. And even if I used a PRC I would still prob be using the 162 gr ELD-X., Among the haul from the residences of Najib Razak are 423 watches worth $19.3 million, and 567 luxury handbags from 37 brands including Hermès, Prada, and Chanel. In raids last mon..., Dec 6, 2017 · Ranging from brand-new to over a century old, all ten of these cartridges are at the top of their class. From left: 6.5-284 Norma, 7mm Rem. Mag., 28 Nosler, .300 Win. Mag., .25-06 Rem., .280 Ackley Improved, .338 Win. Mag., .270 Win., .30-06 Springfield, 6.5 Creedmoor. The following is a list of cartridges that have earned the right to ... , 280 ACKLEY IMPROVED. 280 ACKLEY IMPROVED LH. 300 WBY MAG. 300 WBY MAG LH. 308 WIN. 308 WIN LH. 338 WBY RPM. 338 WBY RPM LH. 6.5 CREEDMOOR. 6.5 CREEDMOOR LH. 6.5 WBY RPM. 6.5 WBY RPM LH. 6.5-300 WBY MAG. 6.5-300 WBY MAG LH. 28 NOSLER. 28 NOSLER LH. 7MM PRC. 7MM PRC LH. Clear: Mark V® …, Jan 27, 2023. This episode dives into the cutting-edge 7mm PRC and the legendary .280 Ackley Improved. We compare accuracy potential, long-range capability, recoil levels, efficiency and barrel life, versatility with various bullets, downrange potency, appropriate rifle actions, magazine capacity and follow-up shots, ammunition and rifle …, The .270 WSM betters the velocity of the .270 Winchester by 200 to 250 fps; that is a considerable increase in speed over an already speedy cartridge. The 130-grain bullets leave the barrel at 3300 fps, and the 150-grain slugs are moving at just about 3150 fps; the trajectory is similar to the 7mm Rem. Mag. and other magnums, in that a 200 …, 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. Here’s why: 280 AI shoots 50 fps to 100 fps faster than the 280 Remington with the same bullets in the same standard-length actions. 280 Remington chambers can be easily converted to 280 AI., His 280 AI set out to improve the .280 Rem by steeping the shoulder to 40 degrees to increase powder capacity. Weatherby is known for ballistics and velocity, our 280 AI offerings will push the industry standards on both. CARTRIDGE SPECS. Bullet Diameter: .284 (7.2mm) Common Reference: 7mm Caliber., Energy-wise, both at the muzzle and at the 400-yard mark with that same 175-grain bullet traveling at the previously listed velocities, the 7mm PRC only has about …, But students of ballistic history will certainly notice that the 7mm PRC—as a modern update to the 7mm Rem. Mag.—treads on ground that was already attempted by the 7mm SAUM and 7mm WSM, …, May 9, 2023 ... Factory Caliber Comparison for LR Hunting James Eagleman used Hornady 6.5 CRM, 6.5 PRC, 7 PRC and 300 PRC on BC 1400 rifles built on ..., Feb 14, 2023 · Links:Website: https://ronspomeroutdoors.com/Facebook: https://www.facebook.com/ronspomeroutdoorsInstagram: https://www.instagram.com/ronspomer/Who is Ron Sp... , The 7mm will hit game harder for sure, but I would personally trust a 6.5CM to do the job terminally (on a whitetail) @ 1000. I would be a lot more concerned with the marksmanship end of things. This is based on having hit a whitetail with a 180smk from my 308 @ 700 yards. The 284/280/280AI recoil is significantly greater than a 6.5CM., Jun 1, 2021 · Ammunition costs between the two cartridges are similar, but manufacturers often offer cheaper options in the .300. Federal’s Trophy Copper .300 Win. Mag. is $66 for a box of 20 while their .280 AI is $70. But Federal also offers eight times more .300 Win. Mag. options than .280 AI, some of which cost significantly less. , Sticking with the 8-pound rifle, the 26 Nosler pushing a 142-grain bullet 3,200 fps will recoil 16 fps with nearly 32 f-p energy. The 28 Nosler adds considerable powder, thus energy, to push the same 175-grain bullet as the 280 AI. This nudges MV (muzzle velocity) to 3,200 fps and increases recoil velocity to almost 18 fps and energy to nearly ..., 6.5-284 Norma vs 6.5 prc Barnes 127gr LRX. ... Today on Alaskan Ballistics we’re comparing the .280 Ackley Improved vs. the 7mm Remington Magnum. What do you all think?, Authorities in Rome are cracking down on tourists sitting down on the Spanish Steps, fining people up to $280 each for the offense. Wandering around Rome can be exhausting, especia..., To answer some of the questions on why I narrowed it down to only those two calibers. The .270WSM or WIN is a great cartridge, but very limited grain weight choices compared to the 7mm's. No complaints on the 7mm-08 either, however my shooting range is out to 500 yards and would like a little more velocity than the 7mm-08 …, The 7mm bullets are one of the few that can rival the .30 caliber range, and there are those who feel the Sectional Density of the 7mm bullets will surpass the potential of the .30 caliber slugs. In spite of all that, the 32-year head start that the .270 Winchester had made a huge difference in sales, and the .280 never really took off., Spinny, a Gurgaon-based startup that operates a platform to facilitate the purchase and sale of used cars, is the latest firm to become a unicorn in the world’s second-largest inte..., It is based on just one of several “7mm-06” wildcats, others including the .280 Ackley Improved and 7mm JRS. These last two remove the body taper, thus increasing powder capacity, and they are indeed every bit as fast as the 7mm Remington Magnum. The .280 Remington retains the gradual taper and gentle shoulder of the .30-06, and …, Head to Head: 6.5 PRC vs. .308 Winchester. We put two short-action gems up against one another: the .308 Winchester, a time-proven veteran with 70-plus years of hunting experience, and the 6.5 PRC, a relative newcomer that is quickly gaining favor in the hunting fields and target range. News, Head To Head. , 6.5 prc 264 win mag 26 nosler 6.5-300 wby mag. 8.5 | 10. 6.8mm rem spc ii 270 winchester ... 280 remington 280 ackley improved 7mm rem mag 7mm wby mag 28 nosler 7mm ..., The Hayabusa2 caught its own outline as it deployed the MASCOT lander on the Ryugu asteroid 174 million miles away from Earth. Japan’s Hayabusa2 probe, traveling through space alon..., Ackley was gathering more industry support and has been around for decades. You can buy 280 remington and shoot in your ackely in a pinch, then reload the fire formed brass. I can still carry an extra round over the PRC. And even if I used a PRC I would still prob be using the 162 gr ELD-X., In what could be one of Twitter’s more significant changes since doubling the character count from 140 to 280 characters, the company is preparing to launch a new feature that woul..., You do realize that the 280 AI as with the 7mm SAUM nearly mimics the 7RM and that the only difference ballistically between the 7 PRC and the 7 RM is the factory barrel twist rate. When you add .25 free bore to the 280 AI you extend the case capacity to around 68.0. You realize that allows you to nearly duplicate 7 PRC ballistics right., Comparing a 140eldm or 143 eldx to a 162 eldx, the 6.5 wins or it’s a wash. With Berger you have to go up to 168 gr 7mm bullets to beat their 140 EH/HT/VLD. For Sierras, a 6.5mm 140 gameking has a significantly higher bc than the 7mm 160. The Nosler seems to be an anomaly in this case as far as the 160gr 7mm having a higher bc than …, The .280 Remington retains the gradual taper and gentle shoulder of the .30-06, and even with the best loads will lag a bit behind the 7mm Remington Magnum. However, it was introduced in a different time, when the ascendancy of the bolt action wasn’t as clear as it is today. So although this seems very odd, Remington actually introduced the ..., Aug 25, 2011 · Re: .280 Ackley Improved any better than other 7mms? If I had to do it again. I may have gone with an 280AI or 7mm-08 to start with instead of a 7mm WSM, because of having more complete powder burn for a shorter barrel. But then the grass is always greener on the other side. On the other hand the extra velocity of the 7mm WSM is nice. , Gunner 500. To answer the original question, .280 AI. If you are going to include Moose then the bigger bullets trump anything the .257 wby can do. I have 2 .257's and a 7mm saum and a .280. I would not choose the .257 over those for Elk or Moose. Sure it would work but the bigger pills are much better IMO.