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Rifles, Reloading, Optics, Equipment
Reloading
Bumping Shoulders Issue
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<blockquote data-quote="Moosetracker" data-source="post: 372658" data-attributes="member: 5152"><p>I also use a Redding the body die to bump the shoulder and resize the case a minimal amount. To set it up for a .002" bump on the shoulder I use the following procedure.</p><p></p><p>1. I take a case fire formed in my firearm. The case should be a tight fit so that it's as close as possible to chamber dimensions.</p><p>2. Set the case in the Digital Headspace Gauge and zero the gauge. Here's the link: <a href="http://www.larrywillis.com/" target="_blank">Innovative Technologies - Reloading Equipment</a></p><p>3. Insert a .003" shim on the redding body die and screw the die in the press till it's snug on the shellholder. Here's the link for the set of shims:</p><p><a href="http://www.sinclairintl.com/product/6170/s" target="_blank">- Skip's die shim kit - (7/8-14)</a></p><p>4. Resize the case with that set up.</p><p>5. Place the case in the Digital Headspace Gauge and get a measurement of the amount of shoulder bump.</p><p>6. If the bump measures .005" all you need to do is replace the .003" shim with a .006" shim and you get a .002" bump.</p><p></p><p>The beauty of this set up is that you don't need to touch the die even if you have multiple guns of the same caliber - you just change the shim in accordance with the bump you need. Also you can use another shim if you want more or less bump.</p><p></p><p>Occasionnally, you get a minimal dimension chamber where you can only get .001" or less with the body die. When this occurs, I use a dedicated shell holder which I sand on a flat surface to take off .001" or so.</p><p></p><p>Finally it's a good idea to keep a tight fitting fire formed case in your die box to test your setting with the Headspace Digital Gauge occasionnally.</p><p></p><p>Much of what I describe here can be applied to a regular full length die.</p><p></p><p>Good luck.</p></blockquote><p></p>
[QUOTE="Moosetracker, post: 372658, member: 5152"] I also use a Redding the body die to bump the shoulder and resize the case a minimal amount. To set it up for a .002" bump on the shoulder I use the following procedure. 1. I take a case fire formed in my firearm. The case should be a tight fit so that it's as close as possible to chamber dimensions. 2. Set the case in the Digital Headspace Gauge and zero the gauge. Here's the link: [url=http://www.larrywillis.com/]Innovative Technologies - Reloading Equipment[/url] 3. Insert a .003" shim on the redding body die and screw the die in the press till it's snug on the shellholder. Here's the link for the set of shims: [url=http://www.sinclairintl.com/product/6170/s]- Skip's die shim kit - (7/8-14)[/url] 4. Resize the case with that set up. 5. Place the case in the Digital Headspace Gauge and get a measurement of the amount of shoulder bump. 6. If the bump measures .005" all you need to do is replace the .003" shim with a .006" shim and you get a .002" bump. The beauty of this set up is that you don't need to touch the die even if you have multiple guns of the same caliber - you just change the shim in accordance with the bump you need. Also you can use another shim if you want more or less bump. Occasionnally, you get a minimal dimension chamber where you can only get .001" or less with the body die. When this occurs, I use a dedicated shell holder which I sand on a flat surface to take off .001" or so. Finally it's a good idea to keep a tight fitting fire formed case in your die box to test your setting with the Headspace Digital Gauge occasionnally. Much of what I describe here can be applied to a regular full length die. Good luck. [/QUOTE]
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Bumping Shoulders Issue
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