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
280 AI concerns
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: 936581" data-attributes="member: 2736"><p>First; Two different gunsmiths should not have gotten two different head space clearances.</p><p>The chamber did not change from one to the other. </p><p></p><p>The "New" 280 AI should be .012 to .014 Thousandths shorter than the original 280 AI, which should not allow a standard 280 rem head space gauge to close in the "New" 280 AI.</p><p></p><p>Tape on the back of a head space gauge is not a good way to measure head space (It can be compressed and give false readings) brass or stainless shim stock is the only way to accurately</p><p>measure head space.</p><p></p><p>SO- If you can close the bolt on a 280 Remington head space gauge (Do not force it) you have the original 280 AI chamber and can shoot all 280 ammo EXCEPT the new Nosler ammo.</p><p></p><p>If You have the "New" chamber, you should not be able to close the bolt using the 280 Head space gauge(The standard 280 head space gauge is used to set head space for the OLD 280 AI so standard 280 ammo can be fired safely while fire forming to the AI chamber). </p><p></p><p>You can jam the 280 or 280 AI into the "NEW" AI chamber most of the time but sizing the brass</p><p>to fit the new chamber is recommended.</p><p></p><p>If you have the "NEW" AI chamber you should only shoot Nosler Ammo in it.</p><p></p><p>If you have the old AI chamber you can shoot all ammo except the Nosler safely.(Shooting the Nosler ammo in a Original AI Chamber can lead to case splitting because of excessive head space.</p><p>So you must know what chamber you have.</p><p></p><p>The "NEW" AI dies can be used in ether chamber if set correctly after fire forming.</p><p></p><p>Hope this helps, And as Shortgrass said: Just because a person has barreled a couple of actions this</p><p>does not automatically make them a gun smith.</p><p></p><p>Proper head space is paramount for safety and accuracy, so it should be measured correctly and precisely.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 936581, member: 2736"] First; Two different gunsmiths should not have gotten two different head space clearances. The chamber did not change from one to the other. The "New" 280 AI should be .012 to .014 Thousandths shorter than the original 280 AI, which should not allow a standard 280 rem head space gauge to close in the "New" 280 AI. Tape on the back of a head space gauge is not a good way to measure head space (It can be compressed and give false readings) brass or stainless shim stock is the only way to accurately measure head space. SO- If you can close the bolt on a 280 Remington head space gauge (Do not force it) you have the original 280 AI chamber and can shoot all 280 ammo EXCEPT the new Nosler ammo. If You have the "New" chamber, you should not be able to close the bolt using the 280 Head space gauge(The standard 280 head space gauge is used to set head space for the OLD 280 AI so standard 280 ammo can be fired safely while fire forming to the AI chamber). You can jam the 280 or 280 AI into the "NEW" AI chamber most of the time but sizing the brass to fit the new chamber is recommended. If you have the "NEW" AI chamber you should only shoot Nosler Ammo in it. If you have the old AI chamber you can shoot all ammo except the Nosler safely.(Shooting the Nosler ammo in a Original AI Chamber can lead to case splitting because of excessive head space. So you must know what chamber you have. The "NEW" AI dies can be used in ether chamber if set correctly after fire forming. Hope this helps, And as Shortgrass said: Just because a person has barreled a couple of actions this does not automatically make them a gun smith. Proper head space is paramount for safety and accuracy, so it should be measured correctly and precisely. J E CUSTOM [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Gunsmithing
280 AI concerns
Top