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
7mm Chamber Neck Size
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="merbeau" data-source="post: 1497883" data-attributes="member: 38494"><p>Hi</p><p>I am currently building a long range (1000 yard rifle) in 7mm caliber, using the 7mm SAUM cartridge as the driving platform. I plan on using Norma brass for the rifle. Norma brass seems very consistent for neck size. I need advice on the chamber neck size.</p><p></p><p>I just purchased a set of Whidden dies including the click die with bushing. According to the directions, the expander can be removed and the neck sized using a bushing. Bushings seem capable of "squeezing" the neck down two to three thousandths of an inch. So if the chamber is cut to where it exceeds the bushing's capability, i.e., the neck needs to be turned? </p><p></p><p>Should I measure 20 necks and then have the chamber cut 0.002 above the neck size and then neck turn 0.002 and use a bushing 0.002 to 0.003 smaller to obtain a consistent neck tension. Or with good brass not a major issue. </p><p></p><p>Thanks</p><p></p><p>Robert</p></blockquote><p></p>
[QUOTE="merbeau, post: 1497883, member: 38494"] Hi I am currently building a long range (1000 yard rifle) in 7mm caliber, using the 7mm SAUM cartridge as the driving platform. I plan on using Norma brass for the rifle. Norma brass seems very consistent for neck size. I need advice on the chamber neck size. I just purchased a set of Whidden dies including the click die with bushing. According to the directions, the expander can be removed and the neck sized using a bushing. Bushings seem capable of “squeezing” the neck down two to three thousandths of an inch. So if the chamber is cut to where it exceeds the bushing's capability, i.e., the neck needs to be turned? Should I measure 20 necks and then have the chamber cut 0.002 above the neck size and then neck turn 0.002 and use a bushing 0.002 to 0.003 smaller to obtain a consistent neck tension. Or with good brass not a major issue. Thanks Robert [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Gunsmithing
7mm Chamber Neck Size
Top