Winchester Model 70 .280 Remington upgrade to AI

dan1953

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Jul 7, 2015
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78
What would it take to upgrade a .280 Remington to an Ackley Improved and what would I gain. I have never reloaded .280 as I don't use the gun much but I would if it became an AI and enabled me to hunt at distance a bit more. It is a featherweight model. Any suggestions for a gunsmith in central Florida, I live on the east coast?
 
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Deleted member 115654

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With a 22" bbl you won't gain much and you'll greatly reduce the resale value of your rifle.

The bbl will need to be set back, rechambered, a new extractor cut and reconed.

You would be ahead, if you wish to shoot farther, to sell your 280 and find a high condition 7mm Rem mag which you can load to duplicate anything from a 7mm08 to a full house 7mm remmag.

good shooting.
 

xsn10s

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Mar 7, 2016
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I think Winchester 280 barrels are 1-9.5" twist too. I'd check because that could take 180 gr bullets out of the equation. I'd first start loading for it to see how the thing shoots.
 

xsn10s

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Mar 7, 2016
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What would you be hunting and at what range? Looks like I'd look at what a 160 gr class bullet would do at a possible 2800 fps. Might be all you need and would make for a comfortable rifle to shoot in a Featherweight.
 

dan1953

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Jul 7, 2015
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It shoots about 1.25 moa right now with factory ammo. Federal Premium 140 gr Trophy Bonded tip.
 

john k

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Aug 7, 2020
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Location
North Central FL
I hunted and shot the .280 most of my adult life. I still love it and there are enough cartridges that perform very closely to where it becomes an emotional or sentimental choice. 4 years ago I changed to the .280 Ackley Improved. I love it and it’s a great cartridge. Truthfully you will not achieve much more in ballistics than 280.
The 7 mag is a more logic choice. But I still would choose 280 AI because it’s a sentimental choice. The difference is out at 500+ yards. To get max out of that cartridge hand loading is essential. If you can’t find a reputable gunsmith, think about ordering a barrel. You would get a lot of feedback on this site in regards to barrels. Good luck!
 

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