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Rifles, Reloading, Optics, Equipment
Reloading
Load development newb help
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<blockquote data-quote="RockyMtnMT" data-source="post: 1256125" data-attributes="member: 7999"><p>You do not have to crimp them.</p><p></p><p>I have never been a crimper, but recently have been doing some crimping. Only because our bullets don't have much baring surface contact on the case neck because of design. In compressed loads they are prone to pushing back out. I do not see any adverse accuracy results from crimping. That said it is one of those things that were commonly done years ago that has faded away. I have heard that some in the bench rest crowd are starting to crimp again for more consistent neck tension. If you do decide to crimp it is very important that your case length is the same on each piece of brass or the amount of crimp will vary.</p><p></p><p>The cannelure (groove around the bullet) is designed as a place for the case neck to crimp into without deforming the bullet.</p><p></p><p>Steve</p></blockquote><p></p>
[QUOTE="RockyMtnMT, post: 1256125, member: 7999"] You do not have to crimp them. I have never been a crimper, but recently have been doing some crimping. Only because our bullets don't have much baring surface contact on the case neck because of design. In compressed loads they are prone to pushing back out. I do not see any adverse accuracy results from crimping. That said it is one of those things that were commonly done years ago that has faded away. I have heard that some in the bench rest crowd are starting to crimp again for more consistent neck tension. If you do decide to crimp it is very important that your case length is the same on each piece of brass or the amount of crimp will vary. The cannelure (groove around the bullet) is designed as a place for the case neck to crimp into without deforming the bullet. Steve [/QUOTE]
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