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
Reloading
Cooper rifle won't chamber twice fired brass
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="fguffey" data-source="post: 1867081" data-attributes="member: 113511"><p>If you are going to grind there is nothing like knowing how much to grind; and then precision is out the window. </p><p></p><p>The deck height of the shell holder should be .125", to decrease the deck height place a shim between the deck of the shell holder and case head, the shim increases the ability of the die to reduce the length of the case from the shoulder to the case head. We have one member that increased the dies ability to decrease the length of the case .0655 + a few; that is greater than the difference in length between the 30/06 and 280 Remington when measured from the datum/shoulder to the case head.</p><p></p><p>I have never found it necessary to grind the bottom of the die and or top of the shell holder but if I did I would want to know how much to grind. Again, I have three machines that butt cut to length in thousandths.</p><p></p><p>I have always said there is a lot about sizing a case the reloader does not understand but: placing a shim between the deck of the shell holder and case head increases the presses ability to overcome the case's ability to to resist sizing. And if you want to know if a small base die will help adding the shim will let you know if you need a small base die.</p><p></p><p>I have small base dies, before using one I have been able to solve the problem. I have built rifles with short chambers for a purpose, shimming the shell holder has never let me down. Not all shell holders are alike; my favorite is the RCBS, the RCBS shell holder reminds me of a hand me down shirt. It only fits where it touches.</p><p></p><p>F. Guffey</p></blockquote><p></p>
[QUOTE="fguffey, post: 1867081, member: 113511"] If you are going to grind there is nothing like knowing how much to grind; and then precision is out the window. The deck height of the shell holder should be .125", to decrease the deck height place a shim between the deck of the shell holder and case head, the shim increases the ability of the die to reduce the length of the case from the shoulder to the case head. We have one member that increased the dies ability to decrease the length of the case .0655 + a few; that is greater than the difference in length between the 30/06 and 280 Remington when measured from the datum/shoulder to the case head. I have never found it necessary to grind the bottom of the die and or top of the shell holder but if I did I would want to know how much to grind. Again, I have three machines that butt cut to length in thousandths. I have always said there is a lot about sizing a case the reloader does not understand but: placing a shim between the deck of the shell holder and case head increases the presses ability to overcome the case's ability to to resist sizing. And if you want to know if a small base die will help adding the shim will let you know if you need a small base die. I have small base dies, before using one I have been able to solve the problem. I have built rifles with short chambers for a purpose, shimming the shell holder has never let me down. Not all shell holders are alike; my favorite is the RCBS, the RCBS shell holder reminds me of a hand me down shirt. It only fits where it touches. F. Guffey [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Cooper rifle won't chamber twice fired brass
Top