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Normal Topic 280AI case trimmer (Read 2329 times)
Good keen bloke
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280AI case trimmer
May 14th, 2020 at 8:17am
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What's everyone using?
Will be working up some loads for my mates new kimber in the near future. Never loaded for 280AI before & can't find a die for my lee quick trim system.
Can i use a 270 die?
Both cals have same trimmed case length.
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shananah
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Re: 280AI case trimmer
Reply #1 - Jun 8th, 2020 at 9:32pm
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A .270 die won't work as the 280 AI is based on the 280 Rem case which has a shoulder further forward than the 270 to prevent anyone chambering a 280 rem into a 270 rifle. I don't know how close Lee make the internals of their trim dies, I'm guessing quite close so I don't know if a 280 Rem trim die will work either. Lee list a separate die for a 280AI but if Reloaders haven't got one, good luck getting one out of the states any time soon. The other option if you're only doing a packet at a time sort of thing, is the use one of the Lee cutter & lock stud https://www.reloaders.co.nz/shop/Reloading/Accessories/Lee+Cutter+And+Lockstud+9...
with a 280 Rem case length gauge https://www.reloaders.co.nz/shop/Reloading/Rifle+Dies/Lee+Case+Length+Gauge+280+...
They a bit slower but work well.
Be aware, that Nosler list a slightly shorter trim length for the AI case (2.525"/ 64.1mm)that the 280 Rem case (2.54"/64.5mm). Maybe check the length against some unfired factory rounds & shorten the pin in the depth gauge to this dimension.
  
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Good keen bloke
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Re: 280AI case trimmer
Reply #2 - Jun 9th, 2020 at 10:26am
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I use ADI powders & in the book it says trim length 2.530" for 280AI.
But yes good idea to measure off 1 of the unfired precision hunter rounds being used at present.
  

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