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Just to satisfy my curiosity, weighed some powder charges I measured to test how repeatable my measuring techniques were.
The first test, the powder measure shown in post # 21, plunger set to 80 grains and measuring Swiss FFg.
77.1
77.8
77.9
77.7
77.1
77.3
77.2
77.4
77.2
77.6
Average 77.43
SD .29833
From a measuring powder flask with a 20 grain spout metering Schuetzen FFFg.
21.1
21.0
20.3
21.2
20.7
20.8
20.9
20.6
20.8
20.6
Average 20.8
SD .26667
Finally, from a Lee crank style powder measure mounted on a stand to take to shoots. Measure set to 1.5cc volume. Schuetzen FFFg. Handle up for about one second to fill, down to dump into an empty rifle case and three light raps with my fingers to make sure no powder sticks to the plastic drop tube.
20.7
20.6
20.6
20.6
20.7
20.8
20.7
20.8
20.8
20.7
Average 20.7
SD .08165
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