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
Hunting
Long Range Hunting & Shooting
Full length resize or neck size only for y'all long range hunters?
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="SidecarFlip" data-source="post: 811182" data-attributes="member: 39764"><p>What I said was concerning case neck concentricity is the indicated runout is half the actual error, not the actual error. Additionally, to read a tenth on any indicator in any jig, requires an extremely rigid mount and none that I've seen for sale offer a rigid enough mount to in indcate a tenth, in fact, all that I've seen come with a thousandth indicator and a thousand of an inch will be on a good day and not repeatable.</p><p> </p><p>In as much as I own a machine shop (and I deal with tenths and hundreths and millionths of an inch), I know full well about the parameters of measurement in small increments.</p><p> </p><p>When dealing in tenths, just the heat from your fingers or a cold draft or your warm breath will have an impact on the reading, especially with brass that has a high coefficient of expansion (and conversely contracton).</p><p> </p><p>For accurate and repeatable measuring in 0.0001 or better, the enviroment must be controlled. Thats not happening on a reloading bench, in your study or anywhere else in a home or garage.</p><p> </p><p>Thats all, nothing more.</p></blockquote><p></p>
[QUOTE="SidecarFlip, post: 811182, member: 39764"] What I said was concerning case neck concentricity is the indicated runout is half the actual error, not the actual error. Additionally, to read a tenth on any indicator in any jig, requires an extremely rigid mount and none that I've seen for sale offer a rigid enough mount to in indcate a tenth, in fact, all that I've seen come with a thousandth indicator and a thousand of an inch will be on a good day and not repeatable. In as much as I own a machine shop (and I deal with tenths and hundreths and millionths of an inch), I know full well about the parameters of measurement in small increments. When dealing in tenths, just the heat from your fingers or a cold draft or your warm breath will have an impact on the reading, especially with brass that has a high coefficient of expansion (and conversely contracton). For accurate and repeatable measuring in 0.0001 or better, the enviroment must be controlled. Thats not happening on a reloading bench, in your study or anywhere else in a home or garage. Thats all, nothing more. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
Full length resize or neck size only for y'all long range hunters?
Top