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Rifles, Reloading, Optics, Equipment
Reloading
Inside neck reaming
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<blockquote data-quote="QuietTexan" data-source="post: 2904057" data-attributes="member: 116181"><p>^^^^^^^^^^^^^^^^^^^^^^^^^^</p><p><img src="https://media3.giphy.com/media/4NMPlVUO6KrjZfp6Ql/200.gif" alt="Count Me In Lets Go GIF by The Tonight Show Starring Jimmy Fallon" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Yup, LE Wilson mic trimmer, fantastic tool.</p><p></p><p>That said, I've only have HAD to ream one set of cases ever, in my experience it's not a very common task.</p><p></p><p>Necking up is normally an issue, not necking down. When you neck up the formed shoulder/neck junction migrates up into the neck. If you're worried you can turn the necks and go slightly on to the shoulder before necking down and you should be fine without having to ream.</p><p></p><p>This is a 243 Win case I neck turned before necking up to .257 cal to create a false shoulder (the bulge in the case neck), you can see a bright ring between the expanded false neck and the shoulder where the old neck/shoulder junction was pushed out, that's what would make the donut if it hadn't been turned first:</p><p></p><p>[ATTACH=full]494172[/ATTACH]</p><p>[ATTACH=full]494173[/ATTACH]</p><p></p><p>Since you're necking down you're all set up to leave a false shoulder for fireforming, I don't see a downside to having the cases being snug for COW method, only takes a couple minutes to test fit cases when setting the die to neck down.</p></blockquote><p></p>
[QUOTE="QuietTexan, post: 2904057, member: 116181"] ^^^^^^^^^^^^^^^^^^^^^^^^^^ [IMG alt="Count Me In Lets Go GIF by The Tonight Show Starring Jimmy Fallon"]https://media3.giphy.com/media/4NMPlVUO6KrjZfp6Ql/200.gif[/IMG] Yup, LE Wilson mic trimmer, fantastic tool. That said, I've only have HAD to ream one set of cases ever, in my experience it's not a very common task. Necking up is normally an issue, not necking down. When you neck up the formed shoulder/neck junction migrates up into the neck. If you're worried you can turn the necks and go slightly on to the shoulder before necking down and you should be fine without having to ream. This is a 243 Win case I neck turned before necking up to .257 cal to create a false shoulder (the bulge in the case neck), you can see a bright ring between the expanded false neck and the shoulder where the old neck/shoulder junction was pushed out, that's what would make the donut if it hadn't been turned first: [ATTACH type="full" width="135px" alt="IMG_1566.jpg"]494172[/ATTACH] [ATTACH type="full" width="135px" alt="Screenshot 2023-09-14 113340.jpg"]494173[/ATTACH] Since you're necking down you're all set up to leave a false shoulder for fireforming, I don't see a downside to having the cases being snug for COW method, only takes a couple minutes to test fit cases when setting the die to neck down. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Inside neck reaming
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