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
Bolt face ID vs. Case Head OD
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: 1638180" data-attributes="member: 2736"><p>As a rule I like .007 to .010 more than the case head diameter.</p><p></p><p>If it is less than .007 thousandths, the case can jam in the recess as it tries to eject on some types of bolt faces.</p><p></p><p>If it is more than .010 thousandths, the extractor may slip out of the extractor grove and not completely eject clear of the action.</p><p></p><p>Ejection becomes the problem if the bolt face is to large. Accuracy is not a problem if the head space is good and sizing has not been over done.</p><p></p><p>I recommend finding a rifle with the same bolt face size or one smaller so you can open it up to the correct clearance. rebated rim cases may require a little more clearance but can be dealt with by placing a chamfer on the outer edge of the bolt face the same angle</p><p>as the back of the case body.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1638180, member: 2736"] As a rule I like .007 to .010 more than the case head diameter. If it is less than .007 thousandths, the case can jam in the recess as it tries to eject on some types of bolt faces. If it is more than .010 thousandths, the extractor may slip out of the extractor grove and not completely eject clear of the action. Ejection becomes the problem if the bolt face is to large. Accuracy is not a problem if the head space is good and sizing has not been over done. I recommend finding a rifle with the same bolt face size or one smaller so you can open it up to the correct clearance. rebated rim cases may require a little more clearance but can be dealt with by placing a chamfer on the outer edge of the bolt face the same angle as the back of the case body. J E CUSTOM [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Gunsmithing
Bolt face ID vs. Case Head OD
Top