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
Reloading
Forster bushing bump neck die?
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="CatShooter" data-source="post: 1299379" data-attributes="member: 7"><p>Good morning Edwardus Maximus....</p><p></p><p>The problem with that gauge is that the rear of the case runs in the extraction groove, and that will show a non-concentricity error with 99.9% of fired cases, even when they are perfect.</p><p></p><p>When a case is fired, the body will swell to fill the chamber - and since the case is smaller than the chamber, and lies at the bottom of the chamber (by gravity) the case will bulge on top - and any observant reloader has seen this bulge.</p><p></p><p>The case can be sized with the best dies, and be perfect, but if you test the concentricity with this tool... and the rear (head) is running in the extractor groove, then the case will show wobble.</p><p></p><p>If you test the same case with any of the other gauges, like the Sinclair, or the RCBS, which supports the head end just in front to the web, it will run true, just the way it would sit in the chamber....</p><p></p><p></p><p><u><a href="http://www.sinclairintl.com/reloading-equipment/measuring-tools/concentricity-gauges/sinclair-concentricity-gauge-prod37479.aspx" target="_blank">SINCLAIR INTERNATIONAL SINCLAIR CONCENTRICITY GAUGE | Sinclair Intl</a></u></p></blockquote><p></p>
[QUOTE="CatShooter, post: 1299379, member: 7"] Good morning Edwardus Maximus.... The problem with that gauge is that the rear of the case runs in the extraction groove, and that will show a non-concentricity error with 99.9% of fired cases, even when they are perfect. When a case is fired, the body will swell to fill the chamber - and since the case is smaller than the chamber, and lies at the bottom of the chamber (by gravity) the case will bulge on top - and any observant reloader has seen this bulge. The case can be sized with the best dies, and be perfect, but if you test the concentricity with this tool... and the rear (head) is running in the extractor groove, then the case will show wobble. If you test the same case with any of the other gauges, like the Sinclair, or the RCBS, which supports the head end just in front to the web, it will run true, just the way it would sit in the chamber.... [U][URL="http://www.sinclairintl.com/reloading-equipment/measuring-tools/concentricity-gauges/sinclair-concentricity-gauge-prod37479.aspx"]SINCLAIR INTERNATIONAL SINCLAIR CONCENTRICITY GAUGE | Sinclair Intl[/URL][/U] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Forster bushing bump neck die?
Top