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unburnt powder

Discussion in 'Reloading' started by kasper7106, Sep 9, 2011.

  1. kasper7106


    Dec 10, 2010
    central ohio
    I recently loaded some 40s&w and took it to the range to test fire them. when I got home and field stripped the gun I noticed that there was quite a bit of unburnt powder. What would be the biggest cause of this. I am using 5.2gr of WSF and 165gr plated flat point, OAL is 1.120. If you need anymore info I will try to get it. thank you


    Dec 20, 2002
    It's most likely from low pressure causing an incomplete burn. As you work your load higher in charge weight it will clean up.
    If you want a light load you might want to switch to a faster powder like Universal.

  3. fredj338


    Dec 22, 2004
    That is a pretty soft load, medium burners like WSF & Unique like to run well above midrange for best combustion. If you want a low vel target load, then drop to a slightly faster powder like W231 or WST. If you want a cleaner load, bump it to 5.6-5.7gr. I run 6.1gr under the same bullet, makes about 950fps in a G32/SL bbl.
    Last edited: Sep 10, 2011