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Useful tables

Below are a couple of tables I use from time to time. All of them are sourced from https://www.skylighter.com

Black Powder Grades & Sizes

Sporting Grades (G)Size (mm)
Cannon Grade4.76-1.68
1FG1.68-1.19
2FG1.19-.59
3FG.84-.29
4FG.42-.15
5FG.149
Blasting Grades (A)Size (mm)
1FA8.0-4.0
2FA4.76-1.68
4FA1.68-.84
5FA.84-.297
7FA.42-.149
Meal D.42
Fine.149

Mesh to Micron

U.S. MESHINCHESMICRONSMILLIMETERS
30.265067306.730
40.187047604.760
50.157040004.000
60.132033603.360
70.111028302.830
80.093723802.380
100.078720002.000
120.066116801.680
140.055514101.410
160.046911901.190
180.039410001.000
200.03318410.841
250.02807070.707
300.02325950.595
350.01975000.500
400.01654000.400
450.01383540.354
500.01172970.297
600.00982500.250
700.00832100.210
800.00701770.177
1000.00591490.149
1200.00491250.125
1400.00411050.105
1700.0035880.088
2000.0029740.074
2300.0024630.063
2700.0021530.053
3250.0017440.044
4000.0015370.037
6250.0008200.020
12500.0004100.010
25000.000250.005

Time fuse delays by size.

Shell Size (in.)Delay Time (sec.)
3"3
4"3.5
5"4
6"5
8"6
10"6.5
12"7

Released under the MIT License.