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
Gunsmithing
Headspacing: Is GO gauge supposed to equate to never-fired brass?
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="J E Custom" data-source="post: 631865" data-attributes="member: 2736"><p>A head space gauge is based on SAAMI specks and all ammo is sized smaller in order to fit </p><p>any chamber. The use of ammo to head space a chamber is not recomended because is is</p><p>difficult to know what there size is compared to SAMMI is There can be .003 to .005 Thousandths</p><p>difference between brands.</p><p></p><p>It is common however to check factory ammo for for fit after the chamber has been head spaced.</p><p></p><p>If the ammo is new .004 worth of shims should be tight/snug but if it is fired in that chamber it</p><p>should not go at all. (Note: if you force the bolt closed on a fired case with a shim behind it of </p><p>any thickness it will set the shoulder back on the case and will not tell you anything) That</p><p>is why you must use a head space gauge that will not compress. </p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 631865, member: 2736"] A head space gauge is based on SAAMI specks and all ammo is sized smaller in order to fit any chamber. The use of ammo to head space a chamber is not recomended because is is difficult to know what there size is compared to SAMMI is There can be .003 to .005 Thousandths difference between brands. It is common however to check factory ammo for for fit after the chamber has been head spaced. If the ammo is new .004 worth of shims should be tight/snug but if it is fired in that chamber it should not go at all. (Note: if you force the bolt closed on a fired case with a shim behind it of any thickness it will set the shoulder back on the case and will not tell you anything) That is why you must use a head space gauge that will not compress. J E CUSTOM [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Gunsmithing
Headspacing: Is GO gauge supposed to equate to never-fired brass?
Top