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
Rifles, Bullets, Barrels & Ballistics
Semi Custom Kimber Montana 280AI
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="yawn" data-source="post: 940614" data-attributes="member: 13540"><p><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> Yes this discussion has been on going for some years now. If you read the first link in my previous post , more specifically the comments that follow you see a reference to Dave Kiff from pacific tool and guage saying pretty much what Dave Manson has said . But the funny thing is Dave Kiff supplied the gauges and reamers that proved there was no difference in the in the second link. I v followed this for quite a while now and Iv taken every chance to check chambers in 280ai. rifles. Im up to eight now with both factory rifles from kimber ,cooper and custom builds that where set up as traditional chambers using the standard 280 rrem gauges. I am yet to find a significant difference.</p><p> The difference as explained in the video is on the drawings and comes from a simple change in datum for the neck shoulder junction when the saami spec was drawn. That is; it is indexed from a slightly different position giving an apparent change in length. On a 40 deg shoulder you only have to shift it .015 (Aprox) along the shoulder to show an apparent .014 difference in length. Even less if the radius is involved.</p><p> One thing to keep in mind is to change head space on a case by .014 takes less than 1/4 turn in of a FL die. From my experience very few reloaders actually set up their FL die properly anway.</p></blockquote><p></p>
[QUOTE="yawn, post: 940614, member: 13540"] :) Yes this discussion has been on going for some years now. If you read the first link in my previous post , more specifically the comments that follow you see a reference to Dave Kiff from pacific tool and guage saying pretty much what Dave Manson has said . But the funny thing is Dave Kiff supplied the gauges and reamers that proved there was no difference in the in the second link. I v followed this for quite a while now and Iv taken every chance to check chambers in 280ai. rifles. Im up to eight now with both factory rifles from kimber ,cooper and custom builds that where set up as traditional chambers using the standard 280 rrem gauges. I am yet to find a significant difference. The difference as explained in the video is on the drawings and comes from a simple change in datum for the neck shoulder junction when the saami spec was drawn. That is; it is indexed from a slightly different position giving an apparent change in length. On a 40 deg shoulder you only have to shift it .015 (Aprox) along the shoulder to show an apparent .014 difference in length. Even less if the radius is involved. One thing to keep in mind is to change head space on a case by .014 takes less than 1/4 turn in of a FL die. From my experience very few reloaders actually set up their FL die properly anway. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Semi Custom Kimber Montana 280AI
Top