The simplest and cheapest way to solve your problem is to get a handloading set (the Lee Handpress Set is a good buy, and very versatile) and load 7mm Mags to starting load levels. Lots of talk about 280 AI being close to 7 mag performance, but I'm wondering if that's really the case for heavier 168 and 175 grain bullets? i am running the same brand barrel and same load as they are. The .280 AI, as it’s called, can fire .280 Remington ammo (and the resulting case is fire-formed to .280 AI afterwards), yet it is capable of nearly matching 7mm Remington Magnum velocities with less powder and muzzle blast from lighter rifles. Mag. The .280 Rem and .30-06 are slightly more (about 21 foot pounds); the .270 WSM, 7mm Rem Mag and .300 Win Mag are noticeably more (26 to 31 foot pounds); the .338 Win Mag is still greater (36 foot pounds); while the .300 and .338 Remington Ultra Mags are far greater (51 to 54 foot pounds). Mag., 6.5 PRC, .264 Win. Calculations were corrected to standard temperature (59F/15C) and pressure (29.92 inHg/1013 mbar) … Looking at the velocity difference between the two cartridges, you’ll see the .280 Remington driving a140-grain bullet at a muzzle velocity between 2950 and 3050 fps, while the 7mm-08 Remington clocks in between 2800 and 2850 fps (Hornady’s Superformance being an exception at 2900 fps). As JD 338 said, the 280 AI comes fairly close to 7mm Mag ballistics, but will not equal it at sane pressures. Mag., 257 Wby. Handloads performance is equal or better than a 7mm mag. 8mm mauser (8x57) 8mm-06 The .280 Rem shoots a little slower, a little less flat, hits a little less hard, with a little less powder, with a little less recoil than the 7mm Rem Mag. HISTORY. The main advantage the 7MM Mag has over the 280 ro the 280 AI is that hyou can find factory 7mm Mag ammo most anywhere big game is hunted. has been accepted as a big game cartridge. The 264 Win is based off the 7mm Rem Mag case so you can neck down … .300 Win Mag vs 7mm Rem Mag: History. The Cooper is a fine choice and the 280 AI is great it all but equals the 7mm and ammo is available through Nosler and maybe Norma, it is easy to load for and you can shoot regular 280 with no problems and it will be just as accurate, just not as fast> 6.5-284 is a hotty as well but same thing on ammo not plentiful but it is available...all this said nothing wrong with the 7mm but every one has one? or the venerable .270 Winchester, if you want perfection, but were aren’t talking mule deer. We can make a 7mm Remington Magnum shoot extremely well, so it helps us in a unique way. and uses 10 to 15 percent less powder to do so. If you compare the ballistics to the .280 Improved, you will find they are almost identical. Mag. The 280 used to be called the 7mm Express, but is now called the 280. They will also tell you that with good handloads the .280 will come within spitting distance of the 7mm Remington Magnum, in a shorter barrel, while burning a lot less powder. I'm looking to shoot 800yds maybe push it to 900yds. It's a fallacy. I believe it fit the bill for a semi auto in the model 100 as did the 308. Re: 284 Win -vs- 280 Rem our local guys got close to 3k accurate rounds of of their 284s running a 175 smk at around 2850 fps. I don't believe the 284 was a failure back in 1963. Due to its performance with 160 and 175 gr. The 280 AI is also very flexable, max loads give you 7mm Rem Mag performance or you can load it down to 7mm-08 levels. 7mm rem mag vs 280 AI with heavy for caliber bullets 04-21-2020, 21:03. Problem was the 280 and 7mm mag was already on the scene as was the 270. However the ballistic coefficient of equal weight bullets favors .270 caliber bullets over 7mm (.284) bullets of similar design. i have no experience with a 280 to make a comparison. It is based on just one of several “7mm-06” wildcats, others including the .280 Ackley Improved and 7mm JRS. .280 Ackley Improved vs. 7mm Remington Magnum. 12-30-2004, 08:00 PM. I'm looking at Kimber Hunter 280AI 24" Savage 110 Long Range Hunter 280AI … It wouldn't even fit in the chamber. 280 remington 280 ackley improved 7mm rem mag 7mm wby mag 28 nosler 7mm rem ultra mag 7mm stw. The Contestants. Appreciate any experience of this comparison. The author analyzed the 7x57 Mauser, 7mm-08 Remington, .280 Remington, 7mm Remington Magnum, 7mm Weatherby Magnum, and 28 Nosler for trajectory, effective range, and recoil with modern ballistic software available free online from shooterscalculator.com. A .280 Remington max load will give you almost exactly the same velocity as a 7mm Magnum starting load. for a faster .280 Ackley Improved, 7mm Rem. At first glance, it is clear that the 7mm Rem Mag rounds have higher BCs than the .30-06 rounds with several of the rounds breaking the .6 mark. Definitely not 7mm Remington Magnum if that's what you're thinking of. The only ammo you can buy for it will be labeled 280 Remington unless it's old stock. The Gibbs now shows about 2940 at safe pressures, close to the big 30 but still 150 FPS shy at equal pressures. Though the .270 Winchester and .30-06 Springfield are both wonderful cartridges that have been incredibly popular with hunters since they were first introduced at the beginning of the 20th Century, gun designers never stopped looking for ways to improve upon the performance of those two old war horses. I prefer the 280 ai. 300 aac blackout 300 savage 308 winchester 30-06 springfield 30-06 springfield ack 30-338 (no fit) 308 norma mag 300 win mag 300 h&h mag 30 nosler 300 rem ultra mag 300 wby mag 300 prc (no fit) 10. Hi all. Regards, Eagleye. And with the .280 Sherman vs. the 7mmRM there is maybe at most 30 FPS difference, if any at all, between the two. 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