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Rifles, Reloading, Optics, Equipment
Reloading
Lee Factory Crimp Die, correct location of crimp
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<blockquote data-quote="Tac-O" data-source="post: 1852162" data-attributes="member: 109994"><p>Yes, all cases are trimmed to length with the Lee case length gauge and I trim every time. I also attempt to trim then even when brand new, just in case there are some outlier long ones.</p><p></p><p>Here is the information straight from Lee:</p><p></p><p>"The width of the crimp that the collet style factory crimp die for rifles applies will be about .040" wide on a case that is at the maximum trim length for the cartridge case. For any trim length shorter than the maximum the crimp width will diminish by that same amount. In other words if the trim length of your 7mm-08 cases was at maximum and the length of your 30-06 cases were .010" below max the width of the crimp on the 7mm case would be about .040" and the width of the crimp on the 06 would be about .030".</p><p></p><p>A crimp that is .020" wide or even a little narrower is sufficient to hold the bullet firmly in the case." </p><p></p><p>So, yes of course the trim length matters just like everyone stated. Someone also mentioned the shellholder!!!</p><p></p><p>I think I may have something wrong with my FCD for my 7mm08. The collet portion of the die is loose inside the outer portion and probably has about 0.10 or 0.20" of play up and down. According to what he says about the crimp being 0.040 wide at max trim length, the crimp on my 7mm08 cartridges should be barely there on brand new brass that isn't long enough to be trimmed. But the crimp marks go pretty far below the mouth. There's something weird going on there. </p><p></p><p>I'll have to take some pictures of each cartridge when I get home this evening as well as take some measurements to verify it's working correctly.</p><p></p><p>Thanks everyone for your awesome input. I'll update with some pictures and any more information I get from Lee will be shared.</p></blockquote><p></p>
[QUOTE="Tac-O, post: 1852162, member: 109994"] Yes, all cases are trimmed to length with the Lee case length gauge and I trim every time. I also attempt to trim then even when brand new, just in case there are some outlier long ones. Here is the information straight from Lee: "The width of the crimp that the collet style factory crimp die for rifles applies will be about .040" wide on a case that is at the maximum trim length for the cartridge case. For any trim length shorter than the maximum the crimp width will diminish by that same amount. In other words if the trim length of your 7mm-08 cases was at maximum and the length of your 30-06 cases were .010" below max the width of the crimp on the 7mm case would be about .040" and the width of the crimp on the 06 would be about .030". A crimp that is .020" wide or even a little narrower is sufficient to hold the bullet firmly in the case." So, yes of course the trim length matters just like everyone stated. Someone also mentioned the shellholder!!! I think I may have something wrong with my FCD for my 7mm08. The collet portion of the die is loose inside the outer portion and probably has about 0.10 or 0.20" of play up and down. According to what he says about the crimp being 0.040 wide at max trim length, the crimp on my 7mm08 cartridges should be barely there on brand new brass that isn't long enough to be trimmed. But the crimp marks go pretty far below the mouth. There's something weird going on there. I'll have to take some pictures of each cartridge when I get home this evening as well as take some measurements to verify it's working correctly. Thanks everyone for your awesome input. I'll update with some pictures and any more information I get from Lee will be shared. [/QUOTE]
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Reloading
Lee Factory Crimp Die, correct location of crimp
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