I have only had five of my loads tested with the Cheddite CX2000 primers in 20ga 3/4oz Unique,12ga 3/4 oz Clay Dot, 12ga 1/8oz Red Dot,10ga 1 1/8oz Red Dot and 8ga 1 1/2oz Clays. I'm finding as a general rule I can reduce the powder by 1.5 gr to 2gr from published data (with WW 209 or Remy 209) and get very acceptable pressures and 1150fps. The smaller the gauge the more sensitive from my experience.
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