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best powder match w/ plated .357mag

Discussion in 'Handloading and Reloading' started by _N4Z_, Nov 22, 2008.

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  1. _N4Z_

    _N4Z_ Member

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    What powder do you guys use/recommend with copper plated 158gr .357 caliber.

    I am using Rainier slugs. Tried a lot of 50 with 13.6gr of 2400. Seemed to work OK, but the residue has me thinking the light crimp is not a good match for 2400.

    Thinking something faster like maybe Bullseye? Also have Unique on tap. The crimping is my concern as I don't want to gouge into the plating.

    What do you guys think?
     
  2. Walkalong

    Walkalong Moderator

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    24000 to Bullseye is a big jump in burn speed. What velocities are you looking for?

    Universal Clays, Unique, AA #5, N340, True Blue are all good choices for midrange and midrange plus loads.

    Clays, N310, N320, Bullseye, Red Dot, American Select etc are more in line for light target loads.

    I taper crimp all my .357 light and midrange loads with plated bullets. Some plated bullets won't tolerate a heavy taper crimp and some will. The light target loads with fast powders don't really need a hard taper crimp, but the moderate speed powders seem to like a pretty firm crimp over a lighter one, if the bullet will tolerate it.
     
  3. Envisaged

    Envisaged Member

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    What gun are you shooting it out of? Leveraction or revolver? Barrel length?
     
  4. XD-40 Shooter

    XD-40 Shooter Member

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    7 grains of Unique, gives me about 1000-1030 fps from a 4" barrel, its accurate.
     
  5. _N4Z_

    _N4Z_ Member

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    shooting with a gp100 revolver, 6 inch barrel.

    moderate loads for steel plates from 15 to 50 yards.


    figured on saving the 2400 for jacketed slugs.

    my crimp die is a lee factory, which employs a roll crimp - not good for plated.

    thinking i can get by with minimal crimp on the plated, with a faster burning powder.
     
  6. Walkalong

    Walkalong Moderator

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    Your Unique will do just fine for that. Bullseye might, depending on how fast you want to drive your slugs.
     
  7. AgentAdam

    AgentAdam Member

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    Herco is in between unique and 2400.
     
  8. janobles14

    janobles14 Member

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    9.0 - 10.5 grains of hs-6 gives a great medium load with these
     
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