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Rifles, Reloading, Optics, Equipment
Reloading
Shoulder bumping
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<blockquote data-quote="vancewalker007" data-source="post: 2346618" data-attributes="member: 66917"><p>The typical dogma is .002 bump because this will give most cartridges enough clearance to chamber smoothly and still be tight enough for the firing pin to work reliably. Its a very good starting point. There are instances where more bump is needed. In my 6.5 PRC I found a .004-.005 bump pushed the case into the die enough to fix the clicker issue where the 0.2 base datum line was not resizing enough. With this bigger bump the datum line went from .533 to .532 and now all my cases chamber like new cases and the shoot fine.</p></blockquote><p></p>
[QUOTE="vancewalker007, post: 2346618, member: 66917"] The typical dogma is .002 bump because this will give most cartridges enough clearance to chamber smoothly and still be tight enough for the firing pin to work reliably. Its a very good starting point. There are instances where more bump is needed. In my 6.5 PRC I found a .004-.005 bump pushed the case into the die enough to fix the clicker issue where the 0.2 base datum line was not resizing enough. With this bigger bump the datum line went from .533 to .532 and now all my cases chamber like new cases and the shoot fine. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Shoulder bumping
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