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7mm Rem Mag to .280AI

 
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  #1  
Old 04-18-2013, 11:05 PM
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7mm Rem Mag to .280AI

I apologize if this is a stupid question, but is it possible to rechamber a Winchester 70 in 7mm Rem mag to a .280 AI? If it required a rebarrel, how difficult would it be to switch to a 30-06? I finally found a LH Stainless Model 70 but have no desire to own a belted magnum. Thank you!
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Old 04-19-2013, 12:07 AM
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Re: 7mm Rem Mag to .280AI

The only stupid question is one that doesn't get asked!

I think it would be a bit more than you'd want to mess with, a simple rechamber would not be possible, it would require a new barrel, and the magnum boltface would not be compatable for a standard '06 size cartridge.
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Old 04-19-2013, 12:13 AM
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Re: 7mm Rem Mag to .280AI

Don't think it would work. The '06 and 280 are "standard" cases .473 diameter, while the 7mm remag is a "magnum", or .532 diameter. In a crf action like the win, it'd be fairly easy to go from small to large, but large to small would require a different bolt. If a bolt could be obtained ($$), there is still the matter of the feed rails, which might not work correctly w/ the skinnier case.
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Old 04-19-2013, 12:24 AM
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Re: 7mm Rem Mag to .280AI

If that is the case, how is the 7mm Rem Mag? I really would prefer a 30-06, but I can't seem to find a LH Winchester to save my life, especially one in stainless. Is it worth it to hold out, or should I go for a Ruger or Remington? I really like the idea of CRF, but it might not be worth it.
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Old 04-19-2013, 12:31 PM
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Re: 7mm Rem Mag to .280AI

7Mag is an awesome caliber. Been shooting them for 10-11 years now. I'm a 7mm nut. I have a 7mm-08, 7mm RemMag (x2), and a 7mmSTW, and fixing to build a .280 AI (which is also a 7mm bullet).

Had a 3rd 7Mag, but it got stolen years ago, so I recently replaced it with an identical one.
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  #6  
Old 04-19-2013, 05:23 PM
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Re: 7mm Rem Mag to .280AI

The 7mm Rem mag has about the same ballistics as the 30-06. Both can drive a 180 gr. bullet about 2800 fps. But the superior BC's of the 7mm bullets make the 7mm Rem Mag a much better candidate for some LR shooting. If memory serves me correctly, the cartridge does not headspace off the belt, so the belt on the case is more for show. If the rifle shoots, I would keep it.
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  #7  
Old 04-19-2013, 06:17 PM
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Re: 7mm Rem Mag to .280AI

Given a choice, I'd pick the 7mm rem mag over the '06 every time. Factory ammo is almost as plentiful, at least in the western states, if you are not a handloader. OTOH, a crf '06 makes a great donor to build something interesting on.......
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