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RANGE (continued)
| 13 Inch. Powder | 10 Inch. Powder | Flight in Seconds. | Ranges in yards. | Length of composition in Fuses. | |||
| lb. | oz. | lb. | oz. | Inches | Parts | ||
| 3 | 0 | 12 | 612 | 2 | 64 | ||
| 4 | 0 | 1 | 12 | 14 | 832 | 3 | 8 |
| 2 | 4 | 15 | 958 | 3 | 30 | ||
| 5 | 0 | 2 | 6 | 16 | 1088 | 3 | 52 |
| 5 | 8 | 2 | 8 | 17 | 1299 | 3 | 74 |
| 3 | 2 | 18 | 1377 | 3 | 96 | ||
| 7 | 0 | 3 | 8 | 19 | 1534 | 4 | 18 |
| 4 | 0 | 20 | 1700 | 4 | 40 | ||
| 8 | 12 | 4 | 8 | 21 | 1874 | 4 | 62 |
| 9 | 0 | 5 | 8 | 22 | 2057 | 4 | 84 |
| 12 | 0 | 23 | 2248 | ||||
| 14 | 24 | 2448 | |||||
| 16 | 25 | 2656 | |||||
| 18 | 8 | 2 | 26 | 2873 | 5 | 72 | |
| 20 | 0 | 8 | 10 | 27 | 3098 | 5 | 94 |
| 22 | 0 | 9 | 8 | 28 | 3332 | 6 | 16 |
| 24 | 8 | 11 | 4 | 29 | 3574 | 6 | 38 |
| 28 | 0 | 12 | 0 | 30 | 3821 | 6 | 60 |
| 31 | 8 | 31 | 4085 | 6 | 82 | ||
The range of mortars, at the several elevations below, are in proportion to one another, viz.
| 45 | 40 | 35 | 30 | 25 | 20 | 15 | 10 | 5 |
| 100 | 98 | 94 | 86 | 76 | 64 | 50 | 34 | 17 |
Example. Knowing the range of a shell at 45 to be 890 yards, required the range at 30 with the same powder; say, as 100 : 86 : : 890 : 765. 4; and if you have a shell's range at 30, and would know how far it will go at 45 with the same quantity of powder, rule as 86 : 100 : 765. 4. 890.
N.B. These propositions only hold good when the powder is equal.
The range of mortars, at the several elevations below, are in proportion to one another, viz.
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Reference Works |  |
© Derived from Thomas Cadell's new corrected edition, London: 1780, page 235, 2003
Prepared by Paul Turnbull
http://southseas.nla.gov.au/refs/falc/1042.html