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Old 02-24-2014, 10:43 PM   #1
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Default 257 weatherby to 338 winchester mag

Can you really neck up in size 257 weatherby mag case to 338 winchester magnum and safely shoot it the belts a tinny bit shorter but you use the case shoulder for head space size right

Your right should say 257 on tittle but now wont let me edit it

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Old 02-25-2014, 03:06 AM   #2
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Yes, They are both built on the H&H belted mag. case !........ie; The .375 H&H Magnum Case............



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Old 02-25-2014, 03:27 AM   #3
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I fixed the title for you. The problem with that much of a "neck up" is you will end up with thin necks. Case life will be greatly shortened. Remember, when you neck up, you lose length

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Old 02-25-2014, 02:38 PM   #4
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Yes i wondered about the neck i have a 257 weatherby and compared the loaded cartridges and except for bullet size they are very close thank you for the replies i will seek proper 338 cases for loading


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