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 alert
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: 512002" data-attributes="member: 2736"><p>That is correct, and that is the way I chambered it but if I had used the new 280 AI head space </p><p>go gauge the 280 Rem would not chamber.</p><p></p><p>I talked to several reamer makers and they said that they have to cut there reamers to the "NEW"</p><p>dimension because it is the SAMMI spec now that Nosler has submitted it as the standard and </p><p>SAMMI has adopted it as submitted. You can still have a wildcat reamer cut but it will not be the </p><p>standard any more.(The old 280 AI reamers were cut like all the rest to use the parent case</p><p>head space gauge).</p><p></p><p>When I head spaced with the 280 AI go gauge the 260 Rem head space go gauge was .0065 to long </p><p>and the bolt would not close on the gauge, and on a factory round head space was .006 and still</p><p>would not close even with lots of pressure.</p><p></p><p>All of the other AIs use the neck to shoulder junction to head space the standard round and shoot</p><p>extremely good while fire forming.</p><p></p><p>I hear what you are saying about the go no go gauges but I can't make myself cut a chamber with</p><p>.006 Thousandths head space. originally I had thought about splitting the difference but decided </p><p>not to take a chance on the accuracy of the rifle and go with .0005 head space using the 280 Rem</p><p> head space gauge so there would be a little compression of the case on the bolt when closing.</p><p></p><p>So this way the chamber will be .006 longer than the NEW SAMMI 280 AI CHAMBER in order to </p><p>use the 280 Rem ammo.</p><p></p><p>I hope this explains the problem better.</p><p></p><p>Again maybe I'm to fussy about head space.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 512002, member: 2736"] That is correct, and that is the way I chambered it but if I had used the new 280 AI head space go gauge the 280 Rem would not chamber. I talked to several reamer makers and they said that they have to cut there reamers to the "NEW" dimension because it is the SAMMI spec now that Nosler has submitted it as the standard and SAMMI has adopted it as submitted. You can still have a wildcat reamer cut but it will not be the standard any more.(The old 280 AI reamers were cut like all the rest to use the parent case head space gauge). When I head spaced with the 280 AI go gauge the 260 Rem head space go gauge was .0065 to long and the bolt would not close on the gauge, and on a factory round head space was .006 and still would not close even with lots of pressure. All of the other AIs use the neck to shoulder junction to head space the standard round and shoot extremely good while fire forming. I hear what you are saying about the go no go gauges but I can't make myself cut a chamber with .006 Thousandths head space. originally I had thought about splitting the difference but decided not to take a chance on the accuracy of the rifle and go with .0005 head space using the 280 Rem head space gauge so there would be a little compression of the case on the bolt when closing. So this way the chamber will be .006 longer than the NEW SAMMI 280 AI CHAMBER in order to use the 280 Rem ammo. I hope this explains the problem better. Again maybe I'm to fussy about head space. J E CUSTOM [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Gunsmithing
280 AI alert
Top