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drinks · October 9, 2006, 08:28 PM

PPM is the Lee Perfect Powder Measure, not the disk measure.
I have a PPM and have tested it several times, with all but WC820, which is a superfine ball powder and H4831, which is about the size of stove wood, I can get .1gr accuracy. With the H4831, it is .2gr accuracy.
The WC 820 is within .1gr but even with a tight adjustment of the rotor, a small amount comes out the side of the drum.
I was given a RCBS cast iron measure, 4 times the price, I tried it out, was no better than the PPM, so ,I sold the RCBS and kept the PPM.

October 9, 2006, 08:28 PM	#11
drinks Senior Member Join Date: November 6, 2004 Posts: 405	PPM is the Lee Perfect Powder Measure, not the disk measure. I have a PPM and have tested it several times, with all but WC820, which is a superfine ball powder and H4831, which is about the size of stove wood, I can get .1gr accuracy. With the H4831, it is .2gr accuracy. The WC 820 is within .1gr but even with a tight adjustment of the rotor, a small amount comes out the side of the drum. I was given a RCBS cast iron measure, 4 times the price, I tried it out, was no better than the PPM, so ,I sold the RCBS and kept the PPM.