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shell crimp

Discussion in 'Shooting Related Threads' started by Beni, Nov 7, 2011.

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  1. Beni

    Beni Member

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    I use mec reloaders,and have a 650 jr.set up for my homamade sabots,the final crimp on this one really puts a dish on the crimp. Compared to my other loaders the crimps are more level,all crimps appear to be perfect. My question is why deep dish a crimp,does it help develop load PSI. Beni
     
  2. MKillian

    MKillian TS Member

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    The height of the crimp shoulders (not the center of the crimp) effect the peak pressure of a load.

    A dished crimp indicates that the component stack inside the load is too short for the hull.

    Mike K
     
  3. BDodd

    BDodd TS Member

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    Mike said it nicely; in an ordinary shotgun cartridge, you need the appropriate wad for the hull, the appropriate amount of shot, and a good choice on powder and amount thereof. Stack all that together and tighten it all up with a crimp and you have a nicely loaded shell. I don't know what the sabot situation might do for you.......breakemall
     
  4. MKillian

    MKillian TS Member

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    Can we assume from your reference to "sabots" that you are loading slugs?

    I haven't seen it all but I've never seen a slug loaded with anything bu a roll crimp.

    Mike K
     
  5. BigM-Perazzi

    BigM-Perazzi Well-Known Member

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    A special Turkey shoot round with an eight point crimp?
     
  6. Beni

    Beni Member

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    Yes Mike it is a sabot slug load right from the Lyman book. I loaded some sabots today on both loaders and the crimps on both were different. What I found out was the loader that dishes the crimp ultimatly tears the pedals from the wads,the flat crimp loader does not and has way better accuracy at the 50yd. mark. I still cant understand the deep dish Im sure its in the crimper on the older press?? beni
     
  7. Bama73

    Bama73 Member

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    You might try raising the final crimp die on the 650 to see if that helps.
     
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