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Group B dies

Discussion in 'Handloading and Reloading' started by AMBASSADOR, Nov 9, 2008.

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  1. AMBASSADOR

    AMBASSADOR Member

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    When loading for a 357mag which crimp is prefered (better or not)roll crimp or tapered crimp.This will be for a revolver application.
     
  2. Walkalong

    Walkalong Moderator

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    Roll crimp any jacketed bullet with a cannelure. Taper crimp most plated bullets. Roll crimp lead bullets with a crimp groove.

    What bullet?
     
  3. rcmodel

    rcmodel Member in memoriam

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    +1

    Roll crimp is for revolvers.

    Taper crimp is for auto pistols.
     
  4. AMBASSADOR

    AMBASSADOR Member

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    CHOICES and why?

    R.C.B.S./Redding/LYMAN,Which die to buy?I am looking for carbide.
     
  5. Hairballusmaximus

    Hairballusmaximus Member

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    I like RCBS. I have not used any other brand though. Probably partial to RCBS since I live an hour away from them.

    I know nothing about Redding dies but I have heard that RCBS is the westcoast and east coast is Lyman and that they are of same quality.

    I have loaded over 35,000 38/357 rounds on my carbide RCBS dies and still going strong.

    Walkalong is correct. Roll/Taper crimp does not always mean revolver or auto pistol. Not all bullets have a crimp groove or cannelure. If a crimp is necessary and a groove/cannelure is not present a roll crimp will deform the jacket or cut and shave lead off. These bullets require a taper crimp when a crimp is necessary, which it is in this case.
     
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