First reload, crimp quality check??

Discussion in 'Handloading and Reloading' started by bsparker, May 18, 2021.

  1. mkl

    mkl Member

    Apr 7, 2008
    DFW area, Texas
    A .38 Special does not need a heavy crimp. Only reason for a crimp is to keep the bullet from backing out under recoil as long as we are talking about a .38 Special. Heavy crimps are needed on "hand cannons" such as max .357 loads or .44 mag. I have one of those "cannons" and can tell you from personal experience that a bullet will back out under very heavy recoil. The .38 does not have that degree of recoil and thus does not need a heave crimp; a light one will do just fine.

    Some will say the crimp will help powder burn rate, but in a .38 Special that is not a consideration given the low pressure. Five grains of Unique behind almost any bullet will work well and give good accuracy with minimum crimp.
    reloaded_in_pa likes this.
  2. webrx
    • Contributing Member

    webrx Contributing Member

    Nov 10, 2010
    i typically crimp a little less than the first picture and a little more then the second, so have to agree with Black Mamba, halfway in between the two.

  3. Obturation
    • Contributing Member

    Obturation Contributing Member

    Dec 24, 2018
    Northern illinois
    I'm a death crimper. If it ain't buckled , it's just right. I'll be honest, I don't see much difference in accuracy either way but I like my bullets firmly in place . I don't see anything wrong with the first picture and I highly doubt case life will suffer much if at all crimped like that. Just my 2 cents, worth what you paid for it.

    As far as trail boss , I get best results with a max load. It's not smart to start at max but with trailboss I start close to max and find best accuracy and less crud up near the top.
    GeoDudeFlorida and ColdSpring like this.
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice