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Does anyone know how Clays powder reacts to temperature changes? I know some powders get hotter as the temp rises and some do the reverse...What does clays do and how sensitive is it?
 

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My IDPA .45 load is 3.6 gr Clays under a 230gr Precision RN. It runs about 750 fps in 90-100 degree weather. It drops about 20-25 fps when the temp drops into the 40's. This is ammo at ambient temp shot through a gun at or near the same ambient temp.
 

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Thanks, thats what I was thinking but I could not remember exactly.
 
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