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necking up brass?

 
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  #1  
Old 04-25-2008, 04:50 PM
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necking up brass?

O.K. so here is the deal. It's time to get new brass for the ol' 300 WSM, and I can't find 300 WSM Norma brass anywhere. I found 270 WSM in stock, so would I be O.K. just necking up the 270 WSM brass? are they the same case dimensions?
Thanks,
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Old 04-25-2008, 05:02 PM
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Yes the same

According to the drawings in Nosler #6, the critical dememsions are the same. 1.664 inches to shoulder, 2.100 overall, and 0.538 diameter at the shoulder. The 7 mm WSM is 1.702 to shoulder for safety reasons...so it won't chamber in either of the other two.
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Old 04-25-2008, 05:39 PM
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Quote:
Originally Posted by Varminator 911 View Post
According to the drawings in Nosler #6, the critical dememsions are the same. 1.664 inches to shoulder, 2.100 overall, and 0.538 diameter at the shoulder. The 7 mm WSM is 1.702 to shoulder for safety reasons...so it won't chamber in either of the other two.
so I can just neck up a 270 wsm, and it will work perfectly?
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Old 04-25-2008, 07:38 PM
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Should work

You should be able to neck the 270 WSM up to 308 and the body/ headspacing should be OK. Necking up may change overall lenght and neck wall thickness. I haven't done it so cann't tell you everything will be OK. You need to check. Both cases too long and necks too thick can be dangerous.

I'd bet if you trim them to length after necking up they will be fine. But don't bet your eyesight on my guess.
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Old 04-25-2008, 08:17 PM
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Sinclair International - Specializing in products designed for precision rifle ammunition reloading and shooting shows normal 300 wsm in stock.

BH
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  #6  
Old 04-25-2008, 08:40 PM
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Check with Cabellas, Natchez, Midway USA and Sinclair.

W.
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  #7  
Old 04-25-2008, 09:41 PM
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Quote:
Originally Posted by BountyHunter View Post
thnks, but I don't really have the money, or need to buy a 100 at a time. a bag of 50 from cabelas lasted me forever.
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