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The Range
Ammo & Reloading
To crimp or not to crimp
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<blockquote data-quote="Woodcutter" data-source="post: 1008500" data-attributes="member: 10230"><p>If the bullet does not have a cannelure ( and Match Kings do not), then you should not try to crimp it unless you are using the Lee Factory Crimp die. Even then, Sierra probably would not recommend crimping the bullet. Crimping might destroy the accuracy of this precision made bullet. The bullet was made for the AR15 type semi-auto rifles and if they thought you needed to crimp it Sierra would have put one on it. Many thousands of rounds of Match Kings are fired each year out of AR-15 rifles at Service Rifle matches, and like was said already, if you load them right you should not have to worry about setback. Just make sure the expander ball in your sizer is the correct size and you use good brass, you should be good to go. If you want a little extra insurance against bullet setback, use a slower powder that fills the case and is slightly compressed.</p></blockquote><p></p>
[QUOTE="Woodcutter, post: 1008500, member: 10230"] If the bullet does not have a cannelure ( and Match Kings do not), then you should not try to crimp it unless you are using the Lee Factory Crimp die. Even then, Sierra probably would not recommend crimping the bullet. Crimping might destroy the accuracy of this precision made bullet. The bullet was made for the AR15 type semi-auto rifles and if they thought you needed to crimp it Sierra would have put one on it. Many thousands of rounds of Match Kings are fired each year out of AR-15 rifles at Service Rifle matches, and like was said already, if you load them right you should not have to worry about setback. Just make sure the expander ball in your sizer is the correct size and you use good brass, you should be good to go. If you want a little extra insurance against bullet setback, use a slower powder that fills the case and is slightly compressed. [/QUOTE]
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