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
What would you do?
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="MagnumManiac" data-source="post: 1571178" data-attributes="member: 10755"><p>To check head clearance is quite simple.</p><p>Take a primed case, fire it and measure the primer protrusion.</p><p>Also check firing pin protrusion by de-cocking the firing pin and measure how far it sticks out. It should be no less than .045" and no more than .065".</p><p>Others have differing opinions on this, but that is where I have never had misfires or pierced primers.</p><p></p><p>With an AI chamber, on the parent case there should be a negative headspace situation. The shoulder/neck juncture should be .003"-.005" LONGER than the chamber. </p><p>It has been established that Nosler messed up when they submitted their 280AI to SAAMI, they forgot to use a negative headspace it appears.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1571178, member: 10755"] To check head clearance is quite simple. Take a primed case, fire it and measure the primer protrusion. Also check firing pin protrusion by de-cocking the firing pin and measure how far it sticks out. It should be no less than .045” and no more than .065”. Others have differing opinions on this, but that is where I have never had misfires or pierced primers. With an AI chamber, on the parent case there should be a negative headspace situation. The shoulder/neck juncture should be .003”-.005” LONGER than the chamber. It has been established that Nosler messed up when they submitted their 280AI to SAAMI, they forgot to use a negative headspace it appears. Cheers. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
What would you do?
Top