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Rifles, Reloading, Optics, Equipment
Reloading
Lee factory crimp die in an RCBS press
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<blockquote data-quote="Hugnot" data-source="post: 2608066" data-attributes="member: 115658"><p>Set crimp amount by feel - screw die into press to get desired crimp.</p><p></p><p>Presses have different length handles and different mechanics so what is 25# down force on one might make for the same amount of ram force as 23# applied on a press with a longer handle or other features to exert ram force. Shell holders and brass dimensions may also vary & this would affect the amount of crimping. If you look down into the crimp die upon contacting the crimp die sleeve with shell holder the crimping effect may be seen and felt. Should a crimp into a cannellure be done more force would be required. My thinking is to make for a minumum crimp to hold the bullet securely. Some bullets have very thin jackets, like .204 & .224 varmint bullets, and exessive crimping would affect concentricity, core/jacket contact & bullet balance.</p></blockquote><p></p>
[QUOTE="Hugnot, post: 2608066, member: 115658"] Set crimp amount by feel - screw die into press to get desired crimp. Presses have different length handles and different mechanics so what is 25# down force on one might make for the same amount of ram force as 23# applied on a press with a longer handle or other features to exert ram force. Shell holders and brass dimensions may also vary & this would affect the amount of crimping. If you look down into the crimp die upon contacting the crimp die sleeve with shell holder the crimping effect may be seen and felt. Should a crimp into a cannellure be done more force would be required. My thinking is to make for a minumum crimp to hold the bullet securely. Some bullets have very thin jackets, like .204 & .224 varmint bullets, and exessive crimping would affect concentricity, core/jacket contact & bullet balance. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Lee factory crimp die in an RCBS press
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