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Rifles, Reloading, Optics, Equipment
Reloading
Making 257 wby brass from 7mm wby brass
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<blockquote data-quote="Dean2" data-source="post: 2718169" data-attributes="member: 26077"><p>Easier way to size it down, take the stem out of your 257 seating die. Run brass through it first, then the sizing die. Your necks should not get appreciably thicker, but measure to be sure.</p><p></p><p>This one, no neck turning needed.</p><p></p><p>I have found it a whole bunch easier to find 378 or 460 brass and just neck it down. Seems to be a lot more available than 338-378.</p><p></p><p>460 brass, 1st step, 378 seating die, 378 FL die, 338-378 seating die part way, 338-378 seating die rest of the way, 338 FL die.</p><p></p><p></p><p><img src="https://i.imgur.com/QKpMtTTl.jpg" alt="QKpMtTTl.jpg" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="Dean2, post: 2718169, member: 26077"] Easier way to size it down, take the stem out of your 257 seating die. Run brass through it first, then the sizing die. Your necks should not get appreciably thicker, but measure to be sure. This one, no neck turning needed. I have found it a whole bunch easier to find 378 or 460 brass and just neck it down. Seems to be a lot more available than 338-378. 460 brass, 1st step, 378 seating die, 378 FL die, 338-378 seating die part way, 338-378 seating die rest of the way, 338 FL die. [IMG alt="QKpMtTTl.jpg"]https://i.imgur.com/QKpMtTTl.jpg[/IMG] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Making 257 wby brass from 7mm wby brass
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