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Rifles, Reloading, Optics, Equipment
Reloading
300 RUM Bullet Crimping
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<blockquote data-quote="Lefty7mmstw" data-source="post: 664472" data-attributes="member: 48043"><p>Most factory ammo has at least some crimp because they have no idea at all how much hell you will put your ammo through before it is finally fired. </p><p>I've loaded thousands of rounds up to 375 h@h(8# rifle) and 405 win, and the only rounds that are crimped are the lever gun rounds, since the case mouth could snag on feeding. I used to crimp the 375, but I've tried without and it's fine. </p><p>A slight taper crimp to help with feeding issues is fine on AR rifles is fine, but most don't need it unless the bullet is a heavy match bullet. They sometimes have enough inertia to move a bullet as the action closes on it. I personally don't crimp AR ammo, even with 75 gr. bullets. </p><p>I do crimp bullets for my revolver also, same reason as the AR, bullets could move. The powder used in revolver rounds also requires a lot of "pull" for consistent ignition.</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 664472, member: 48043"] Most factory ammo has at least some crimp because they have no idea at all how much hell you will put your ammo through before it is finally fired. I've loaded thousands of rounds up to 375 h@h(8# rifle) and 405 win, and the only rounds that are crimped are the lever gun rounds, since the case mouth could snag on feeding. I used to crimp the 375, but I've tried without and it's fine. A slight taper crimp to help with feeding issues is fine on AR rifles is fine, but most don't need it unless the bullet is a heavy match bullet. They sometimes have enough inertia to move a bullet as the action closes on it. I personally don't crimp AR ammo, even with 75 gr. bullets. I do crimp bullets for my revolver also, same reason as the AR, bullets could move. The powder used in revolver rounds also requires a lot of "pull" for consistent ignition. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 RUM Bullet Crimping
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