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Rifles, Reloading, Optics, Equipment
Reloading
270 to 280/280AI HELP NEEDED!
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<blockquote data-quote="flashhole" data-source="post: 967522" data-attributes="member: 21375"><p>I'm not a big fan of necking up but if you do the math it might work out nicely.</p><p></p><p>The 270 bullet diameter is .277", once fired it will likely expand the brass neck ID to ~ 279" - .280". </p><p></p><p>A 280 bullet diameter is .284" and a sizing die will likely provide .002" - .003" neck tension so the ID on the 280 sized neck will be about .282". </p><p></p><p>You would only have to expand the neck about .002" - .003". </p><p></p><p>A FL sizing die with an eliptical expander ball and a bit of lube on it should do it easily. I think you would just have to run it up into the die. Not sure but you might need to trim a bit off the length of the 270 case before running it into a 280 FL sizer.</p><p></p><p>I resize 30-06 to 25-06. I like to use the "Greek" brass with HXP head-stamp because it does not have any other markings aside from a year of manufacture. Then I turn the necks for uniformity. Not difficult at all, just takes a bit of time.</p></blockquote><p></p>
[QUOTE="flashhole, post: 967522, member: 21375"] I'm not a big fan of necking up but if you do the math it might work out nicely. The 270 bullet diameter is .277", once fired it will likely expand the brass neck ID to ~ 279" - .280". A 280 bullet diameter is .284" and a sizing die will likely provide .002" - .003" neck tension so the ID on the 280 sized neck will be about .282". You would only have to expand the neck about .002" - .003". A FL sizing die with an eliptical expander ball and a bit of lube on it should do it easily. I think you would just have to run it up into the die. Not sure but you might need to trim a bit off the length of the 270 case before running it into a 280 FL sizer. I resize 30-06 to 25-06. I like to use the "Greek" brass with HXP head-stamp because it does not have any other markings aside from a year of manufacture. Then I turn the necks for uniformity. Not difficult at all, just takes a bit of time. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
270 to 280/280AI HELP NEEDED!
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