Always empty the hopper when I'm done for the day.
Smokeless powder is hydrophillic (it will absorb humidity from the air) and when it absorbs water, it swells. Only the top half inch or so will swell like this. This makes any later charges thrown from that powder less powerful than the first charges thrown from dry powder, but not consistently so.
Smokeless powder is hydrophillic (it will absorb humidity from the air) and when it absorbs water, it swells. Only the top half inch or so will swell like this. This makes any later charges thrown from that powder less powerful than the first charges thrown from dry powder, but not consistently so.


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