[Forester]

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?

 

[aclundwall]

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.

 

[Forester]

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