The following table is taken from a late French author[2], whose
method of regulating the charges is according to the interior
diameter of the mould, which he divides into lines.
Interior | Weight of |Saltpetre.|Brimstone.|Charcoal.
diameter of|the rocket.| | |
the mould. | | | |
-----------+-----------+----------+----------+---------
Lines. |lb. oz. dr.| ounces. | ounces. | ounces.
-----------+-----------+----------+----------+---------
6 | 0 0 4 } | |
7 | 0 0 6 } 44 | 4 | 16
8 | 0 1 1 } | |
| | | |
9 | 0 1 5 } | |
10 | 0 2 2 } 40 | 4 | 16
11 | 0 3 0 } | |
| | | |
12 | 0 3 7 } | |
13 | 0 4 6 } 38 | 4 | 16
14 | 0 6 1 } | |
| | | |
15 | 0 7 4 } | |
16 | 0 9 1 } 36 | 4 | 16
17 | 0 11 0 } | |
| | | |
18 | 0 13 1 } | |
19 | 0 15 4 } 34 | 4 | 16
19¼ | 1 0 0 } | |
| | | |
21 | 1 7 1 | | |
| | | |
24 | 1 15 1 | 32 | 5 | 16
| | | |
30 | 4 0 0 } | |
36 | 6 9 0 } 30 | 6 | 18
72 | 55 8 0 } | |