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Rifles, Reloading, Optics, Equipment
Reloading
Reloading Pistol Tips
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<blockquote data-quote="Laelkhunter" data-source="post: 1371540" data-attributes="member: 38154"><p>You definitely want to expand the mouth of the case enough to allow the bullet to enter the case during the seating process. This will prevent it from shaving some of the bullet base, or cause the case wall to collapse. On revolver cartridges, you want a "roll crimp", and crimp into the cannelure if the bullet has one. If it doesn't, trying to crimp the case too much will cause the case to bulge, and it won't chamber in the weapon.</p><p> On auto pistol cartridges, it is best to "taper crimp", Lee & RCBS make a Taper Crimp die. It is best to adjust the seating die out until it doesn't crimp the case, then screw it in a little at a time, while raising the ram pushing the cartridge into the crimp die. A little at a time until you don't feel the "lip" as you put it. You don't want to over crimp (crush) the case mouth, because the pistol round seats (headspaces) on the mouth of the case when it chambers. Too much crimp could cause the round to enter too far into the chamber, and might cause misfires (although the extractor will probably hold the case against the face of the slide).</p></blockquote><p></p>
[QUOTE="Laelkhunter, post: 1371540, member: 38154"] You definitely want to expand the mouth of the case enough to allow the bullet to enter the case during the seating process. This will prevent it from shaving some of the bullet base, or cause the case wall to collapse. On revolver cartridges, you want a "roll crimp", and crimp into the cannelure if the bullet has one. If it doesn't, trying to crimp the case too much will cause the case to bulge, and it won't chamber in the weapon. On auto pistol cartridges, it is best to "taper crimp", Lee & RCBS make a Taper Crimp die. It is best to adjust the seating die out until it doesn't crimp the case, then screw it in a little at a time, while raising the ram pushing the cartridge into the crimp die. A little at a time until you don't feel the "lip" as you put it. You don't want to over crimp (crush) the case mouth, because the pistol round seats (headspaces) on the mouth of the case when it chambers. Too much crimp could cause the round to enter too far into the chamber, and might cause misfires (although the extractor will probably hold the case against the face of the slide). [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Reloading Pistol Tips
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