BLACK POWDER CONVERSIONS
Note: All Black Powder Loading Instructions refer to VOLUME. 100 gr. VOLUME of BP equals approximately 100 gr. WEIGHT.
100 gr. Volume of APP FFg weighs 85.0 gr., and 100 grl. Volume 777 FFg weighs 73.3 gr. But powder scales measure weight.
Chart 1 converts weights of Black Powder (Goex FFg) to volume equivalent weights of American Pioneer Powder FFg, Hodgdon 777 FFg, Goex Pinnacle FFg and FFFg and Pyrodex RS. Since 777 is, 15% more powerful than Goex FFg, those adjustments are included.
SAMPLE USAGE: Loading instructions call for 55 gr. FFg for a 12 ga. shotgun load. Using your scale you would load 55 gr. of Goex FFg. or 46.75 gr. APP FFg or 40.32 gr. of 777 or 48.4 gr. Pinnacle FFg and not change any part of your loading setup. Since this would make the round considerably hotter using 777, you could reduce the charge to, say, 35 gr. for an equivalent charge. But now your wad would need to be changed to a taller one or the crimp would collapse.
Chart 1, Weight to Volume Equivalent Weights
Goex APP 777 777 Adjusted Pinnacle Pinnacle Pyrodex
FFg FFg FFg 15% FFg FFFg RS
100
85.0
73.3
 62.3 88.0 85.0 68.4
95
80.8
69.6
 59.2 83.6 80.8 65.0
90
76.5
66.0
 56.1 79.2 76.5 61.6
85
72.3
62.3
 53.0 74.8 72.3 58.1
80
68.0
58.6
 49.8 70.4 68.0 54.7
75
63.8
55.0
 46.7 66.0 63.8 51.3
70
59.5
51.3
 43.6 61.6 59.5 47.9
65
55.3
47.6
 40.5 57.2 55.3 44.5
60
51.0
44.0
 37.4 52.8 51.0 41.0
55
46.8
40.3
 34.3 48.4 46.8 37.6
50
42.5
36.7
 31.2 44.0 42.5 34.2
45
38.3
33.0
 28.0 39.6 38.3 30.8
40
34.0
29.3
 24.9 35.2 34.0 27.4
35
29.8
25.7
 21.8 30.8 29.8 23.9
34
28.9
24.9
 21.2 29.9 28.9 23.3
33
28.1
24.2
 20.6 29.0 28.1 22.6
32
27.2
23.5
 19.9 28.2 27.2 21.9
31
26.4
22.7
 19.3 27.3 26.4 21.2
30
25.5
22.0
 18.7 26.4 25.5 20.5
29
24.7
21.3
 18.1 25.5 24.7 19.8
28
23.8
20.5
 17.4 24.6 23.8 19.2
27
23.0
19.8
 16.8 23.8 23.0 18.5
26
22.1
19.1
 16.2 22.9 22.1 17.8
25
21.3
18.3
 15.6 22.0 21.3 17.1
24
20.4
17.6
 15.0 21.1 20.4 16.4
23
19.6
16.9
 14.3 20.2 19.6 15.7
22
18.7
16.1
 13.7 19.4 18.7 15.0
21
17.9
15.4
 13.1 18.5 17.9 14.4
20
17.0
14.7
 12.5 17.6 17.0 13.7
19
16.2
13.9
 11.8 16.7 16.2 13.0
18
15.3
13.2
 11.2 15.8 15.3 12.3
17
14.5
12.5
 10.6 15.0 14.5 11.6
16
13.6
11.7
 10.0 14.1 13.6 10.9
15
12.8
11.0
 9.3 13.2 12.8 10.3
14
11.9
10.3
 8.7 12.3 11.9 9.6
13
11.1
9.5
 8.1 11.4 11.1 8.9
12
10.2
8.8
 7.5 10.6 10.2 8.2
11
9.4
8.1
 6.9 9.7 9.4 7.5
10
8.5
7.3
 6.2 8.8 8.5 6.8
9
7.7
6.6
 5.6 7.9 7.7 6.2
8
6.8
5.9
 5.0 7.0 6.8 5.5
7
6.0
5.1
 4.4 6.2 6.0 4.8
6
5.1
4.4
 3.7 5.3 5.1 4.1
5
4.3
3.7
 3.1 4.4 4.3 3.4
4
3.4
2.9
 2.5 3.5 3.4 2.7
3
2.6
2.2
 1.9 2.6 2.6 2.1
2
1.7
1.5
 1.2 1.8 1.7 1.4
1
0.9
0.7
 0.6 0.9 0.9 0.7
GOEX APP 777 15% Pinnacle Pinnacle Pyrodex
FFg FFg FFg 777 FFg FFg FFFg RS
Chart 2: Grains to CCs--For Lee Dippers--BP and Substitutes only
CHART 2
Grains to CCs
Gr.
CC
100 6.62
95 6.29
90 5.96
85 5.63
80 5.30
75 4.97
70 4.63
65 4.30
60 3.97
55 3.64
50 3.31
45 2.98
40 2.65
35 2.32
34 2.25
33 2.18
32 2.12
31 2.05
30 1.99
29 1.92
28 1.85
27 1.79
26 1.72
25 1.66
24 1.59
23 1.52
22 1.46
21 1.39
20 1.32
19 1.26
18 1.19
17 1.13
16 1.06
15 0.99
14 0.93
13 0.86
12 0.79
11 0.73
10 0.66
9 0.60
8 0.53
7 0.46
6 0.40
5 0.33
4 0.26
3 0.20
2 0.13
1 0.07
Gr.
CC
Chart 3: Ounces to Grains--useful for adjusting shot charges using a powder scale that measures in grains.
CHART 3
Ounces to Grains
OUNCE
GRAINS
16.00 7000.00
1 437.50
1.125 492.19
1.25 546.88
1.275 557.81
1.3 568.75
1.325 579.69
1.35 590.63
1.375 601.56
1.5 656.25
Chart 4 Drams to Gr. Of BP
CHART 4
Drams to Gr. BP
Dram
Gr. BP
1 27.34
2 54.68
2.25 61.52
2.5 68.35
2.75 75.19
3 82.02
3.25 88.86
3.5 88.86
3.75 102.53
Chart 5: Trail Boss Gr. To CCs, no, not a BP conversion, but requested by prospective Trail Boss Shooters
CHART 5
Trailboss

217 gr./ltr
Gr.
CC
1 0.217
2 0.434
3 0.651
4 0.868
5 1.085
6 1.302
7 1.519
8 1.736
9 1.953
10 2.17
Created 2-01-05
Updated 2-09-07
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