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Thread: Crimping

  1. #1
    Join Date
    Mar 2012
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    NW Oregon, where palm trees grow
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    906

    Default Crimping

    Hi,
    Sunday we had some folks over to shoot. Husbands & wives. Calbers were .38, 9mm, .40 and .45 acp. Everything was going fine except for a few ftfd. These were with the 9s and .45s. Those folks were shooting reloads. After some inspection of the unfired rnds. on the ground I noticed those rnds were not crimped. The case mouths were not belled but they weren't crimped.
    The guns used used were a s Sig, Glock, 1911, and an RIA. After much cussing I suggested they try my reloads for 9s, and .45s ( I have no use for .40s )
    From then on everything went on without a hitch.
    These folks there didn't reload together. They did their own things.

    So I know how I crimp my reloads ( 9mm, .38, .357, .44, & .45 ) I wonder how others crimp
    Last edited by jg rider; 12-05-2019 at 11:41 PM.

  2. #2
    Join Date
    Sep 2009
    Location
    Wet & Wild Pacific NW
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    28,896

    Default

    I haven't loaded for quite a bit, probably a couple years. I load mainly 45 where I just taper crimp.
    Don't reload much revolver but used to do 38 and 357, 44 and 45 Colt. I roll crimp fairly positively on those.
    Like bullets with a cannelure to grab onto. Most ranges around here don't allow lead any more so I've got quite a few lead bullets just in limbo.
    http://bawanna45.wix.com/bawannas-grip-emporium#!
    In Memory of Paul "Dietrich" Stines.
    Dad: Say something nice to your cousin Shirley
    Dietrich: For a fat girl you sure don't sweat much.
    Cue sound of Head slap.

    RIP Muggsy & TMan

    "If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."

  3. #3
    Join Date
    Mar 2012
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    NW Oregon, where palm trees grow
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    Default

    Here's what I do for all calibers, based on what Mike Dillon said


    "When I adjust a taper crimp die, no matter the caliber, the procedure is the same: Put a sized, unflared, empty case into the last postion. Pull the handle down. Let go of the handle. With my fingers only, screw the die down until I feel it contact the case mouth. Lift the handle up slightly, hold it there while I screw the die down an additional 1/4 turn. Push the handle down, running the case back up into the die. With the case up in the die, tighten the die lock ring.

    The Dillon seat die does not remove the flare completely. However, it will remove any excess flare :ie, if the case is excessively flared that it contacts the interior of the die body, it will be reduced. "


    WWW.DILLONPRECISION.COM

  4. #4
    Join Date
    Apr 2013
    Location
    Wisconsin
    Posts
    4,500

    Default

    Also helps guard against bullet set back.......................................I NEVER shoot reloads and especially someone elses................................

  5. #5
    Join Date
    Sep 2009
    Location
    Wet & Wild Pacific NW
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    28,896

    Default

    Actually now that you wrote that down, that's pretty much exactly what I do in most cases.
    In some revolver loads back in the day I put a little heavier crimp.
    http://bawanna45.wix.com/bawannas-grip-emporium#!
    In Memory of Paul "Dietrich" Stines.
    Dad: Say something nice to your cousin Shirley
    Dietrich: For a fat girl you sure don't sweat much.
    Cue sound of Head slap.

    RIP Muggsy & TMan

    "If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."

  6. #6
    Join Date
    Nov 2010
    Location
    SE Michigan
    Posts
    394

    Default

    I load more than 12k of 45 acp per year. Mostly Berry’s plated and some Acme coated using a Dillion. The crimp using plated and coated is different. Much less crimp is used, less than I prefer but that’s how it works out. Too much crimp with Berry’s and the coating is torn off and the bullet tumbles. Less of a problem with the coated.
    KP3833N, PM9093N, PM4543N, TP4543, CZ 75B, CZ 97B, P22, Just Right Carbine 45 ACP marine takedown, Glock 41

  7. #7

    Default

    Quote Originally Posted by jg rider View Post
    Here's what I do for all calibers, based on what Mike Dillon said


    "When I adjust a taper crimp die, no matter the caliber, the procedure is the same: Put a sized, unflared, empty case into the last postion. Pull the handle down. Let go of the handle. With my fingers only, screw the die down until I feel it contact the case mouth. Lift the handle up slightly, hold it there while I screw the die down an additional 1/4 turn. Push the handle down, running the case back up into the die. With the case up in the die, tighten the die lock ring.

    The Dillon seat die does not remove the flare completely. However, it will remove any excess flare :ie, if the case is excessively flared that it contacts the interior of the die body, it will be reduced. "


    WWW.DILLONPRECISION.COM
    Well written tutorial. Thanks for sharing. That’s been my procedure as well but I couldn’t have described it so clearly. Also, like Bawanna.. for magnum revolver cartridges I generally use a much heavier roll crimp.

  8. #8
    Join Date
    Dec 2019
    Posts
    4

    Default

    Quote Originally Posted by jg rider View Post
    Hi,
    Sunday we had some folks over to shoot. Husbands & wives. Calbers were .38, 9mm, .40 and .45 acp. Everything was going fine except for a few ftfd. These were with the 9s and .45s. Those folks were shooting reloads. After some inspection of the unfired rnds. on the ground I noticed those rnds were not crimped. The case mouths were not belled but they weren't crimped.
    The guns used used were a s Sig, Glock, 1911, and an RIA. After much cussing I suggested they try my reloads for 9s, and .45s ( I have no use for .40s )
    From then on everything went on without a hitch.
    These folks there didn't reload together. They did their own things.

    So I no how I crimp my reloads ( 9mm, .38, .357, .44, & .45 ) I wonder how others crimp
    I taper crimp with my Lee dies for everything but .38/.357 Mag, and they fire fine. I made the mistake early on of crimping too tight and came back with about 50% of my brass cracked. You don't need much of a crimp, I lower the handle until I can feel the bullet then back it out a full turn. For .38/.357 Mag I don't crimp at all.
    Last edited by dirtdart97; 12-04-2019 at 06:53 PM. Reason: Added bottom sentence.

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