My case of B209 showed up yesterday. Rain and snow forecast for the weekend. Will test as soon as weather and work permits.
I measured 36 100 grain volume charges using the T/C brass and the T/C U-View. All charges weighed on a beam scale.
First the T/C brass measure with thrown 100 grain volume charges scraped level. The 12 weights are as follows.
68.4
69.3
69.3
69.968.7
69.0
69.7
68.7
68.7
67.868.0
69.1
Average is 68.88, with an extreme spread (bold) of 2.1 grain weight.
Thrown 100 grain volume charges using T/C U-View, scraped level.
68.5
69.568.2
68.5
67.6
67.8
67.8
68.0
67.4
68.3
68.1
67.3Average is 68.08, with an extreme spread (bold)of 2.2 grains weight.
T/C brass measure, 100 grain volume charges tapped (10 times), settled, and scraped level. These were a little more accurate, but still varied more than expected.
70.2
70.1
70.1
70.3
69.4
69.7
69.6
69.369.5
70.469.5
70.4
Average is 69.87, with an extreme spread (bold) of 1.1 grains weight.
I never weighed the same powder twice, all measurements were taken, one after the other just like if you were shooting the previous charge. After all readings were taken, the powder was returned to it's container.
For me, I will be tapping and settling the charges if using a powder measure, or weighing and placing charges in vials.
These are the powder measures that I used.