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Rifles, Reloading, Optics, Equipment
Reloading
Which decapping rod expander
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<blockquote data-quote="Clark" data-source="post: 1140234" data-attributes="member: 6600"><p>I got a Sinclair concentricity checker ~ 10 years ago for ~$100.</p><p>Inside the box was a fortune cookie note:</p><p>"You will probably find that the expander ball is the problem."</p><p></p><p>Save yourself $100, and stop using the expander ball during the resizing step.</p><p>When the neck of the dies changes the neck of the brass while the expander ball is in the case, the expander ball is going to expand the neck on the way out. That force is opposed by the shell holder in tension. The shell holder does not pull straight. Not enough to see the case neck look bent with the naked eye, but enough to measure with the concentricity gauge.</p><p></p><p>There are things that will make a bigger difference than getting rid of the expander ball:</p><p>Shoot when there is no wind</p><p>Clean the Copper out of the bore</p><p>Don't flinch when pulling the trigger.</p><p></p><p></p><p>Most accuracy rituals have no measureable effects, they just add up.</p><p>But the expander ball effect is big enough to see when two targets are compared.</p></blockquote><p></p>
[QUOTE="Clark, post: 1140234, member: 6600"] I got a Sinclair concentricity checker ~ 10 years ago for ~$100. Inside the box was a fortune cookie note: "You will probably find that the expander ball is the problem." Save yourself $100, and stop using the expander ball during the resizing step. When the neck of the dies changes the neck of the brass while the expander ball is in the case, the expander ball is going to expand the neck on the way out. That force is opposed by the shell holder in tension. The shell holder does not pull straight. Not enough to see the case neck look bent with the naked eye, but enough to measure with the concentricity gauge. There are things that will make a bigger difference than getting rid of the expander ball: Shoot when there is no wind Clean the Copper out of the bore Don't flinch when pulling the trigger. Most accuracy rituals have no measureable effects, they just add up. But the expander ball effect is big enough to see when two targets are compared. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Which decapping rod expander
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