Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
necking down 7saum to 6.5 gap
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Mikecr" data-source="post: 1479231" data-attributes="member: 1521"><p>No, case length does not change with neck sizing either way (up or down).</p><p></p><p>Necking <u>up</u> a cal, with a mandrel, brings a bit of neck-shoulder junction into new neck. This is likely thicker than mean neck thickness, and is seen as a donut. But forming is never a done deal until fire forming is completed, and provided you never size donut area, it should not be a problem.</p><p></p><p>Necking <u>down</u>, turns out some of the existing neck into new neck-shoulder junction. Nothing about this contributes to a donut.</p><p></p><p>That is with NECK SIZING, which is not FL sizing.</p><p>If you intend to form with a FL die, all prediction is gone, because FL sizing can change EVERYTHING (including case length).</p><p></p><p>Another method, for radical conversions, is use of a pure forming die set.</p><p>I've used a Lee Six forming set to create a 2 inch neck with a 30-06 case. This, just for fun. But like neck sizing alone, it does not change case length.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1479231, member: 1521"] No, case length does not change with neck sizing either way (up or down). Necking [U]up[/U] a cal, with a mandrel, brings a bit of neck-shoulder junction into new neck. This is likely thicker than mean neck thickness, and is seen as a donut. But forming is never a done deal until fire forming is completed, and provided you never size donut area, it should not be a problem. Necking [U]down[/U], turns out some of the existing neck into new neck-shoulder junction. Nothing about this contributes to a donut. That is with NECK SIZING, which is not FL sizing. If you intend to form with a FL die, all prediction is gone, because FL sizing can change EVERYTHING (including case length). Another method, for radical conversions, is use of a pure forming die set. I've used a Lee Six forming set to create a 2 inch neck with a 30-06 case. This, just for fun. But like neck sizing alone, it does not change case length. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
necking down 7saum to 6.5 gap
Top