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Rifles, Reloading, Optics, Equipment
Reloading
300 WM. Crimp or not to crimp?
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<blockquote data-quote="catamountsierra" data-source="post: 1767540" data-attributes="member: 79865"><p>The only crimp I have ever used is the Lee Factory Crimp die, and have found that it has helped accuracy in several factory guns. I plan to use it for fireforming loads for my 284 and 223AI, but once I start load development I test with and without the crimp to see which gives me the better accuracy. Also, use a very light crimp with the Lee die. A crimp seems to help by evening out pressure needed to start the bullet, and it doesn't take much to do that. I will say, that die can really crimp down hard, even with bullets that lack a cannelure, but heavy crimps have always degraded accuracy.</p></blockquote><p></p>
[QUOTE="catamountsierra, post: 1767540, member: 79865"] The only crimp I have ever used is the Lee Factory Crimp die, and have found that it has helped accuracy in several factory guns. I plan to use it for fireforming loads for my 284 and 223AI, but once I start load development I test with and without the crimp to see which gives me the better accuracy. Also, use a very light crimp with the Lee die. A crimp seems to help by evening out pressure needed to start the bullet, and it doesn't take much to do that. I will say, that die can really crimp down hard, even with bullets that lack a cannelure, but heavy crimps have always degraded accuracy. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 WM. Crimp or not to crimp?
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