| Ricochet Practice with Iron Ordnance. | ||||||||
| Round Shot. | ||||||||
| 68 Pr. Carronade.* | 24 Pr. Gun, 9 Feet. | 18 Pr. Gun, 8 Feet. | 12 Pr. Gun, 8½ Feet. | |||||
| Range in yards. | Charge. | Eleva- tion. | Charge. | Eleva- tion. | Charge. | Eleva- tion. | Charge. | Eleva- tion. |
| lb. oz. | deg. | lb. oz. | deg. | lb. oz. | deg. | lb. oz. | deg. | |
| 400 | 12 | 6¼ | 9 | 6½ | 8 | 4½ | ||
| 10 | 7¾ | 6 | 6½ | |||||
| 8 | 11 | |||||||
| 600 | 1 12 | 7 | 6 | 6 | 1 | 5¼ | 12 | 4¾ |
| 1 8 | 8¾ | 1 8 | 4 | 12 | 7 | 10 | 6 | |
| 1 | 6½ | 8 | 7¾ | |||||
| 800 | 2 | 3¾ | 1 8 | 4¼ | 1 | 4½ | ||
| 1 8 | 5½ | 1 | 7 | 12 | 6½ | |||
| * Note.—When Shells are fired from the 68 Pounder Carronade, the Elevation must be decreased about half a degree. | ||||||||
| Part 2 of 2 | ||||||
| Common Shell. | ||||||
| 10-inch Howitzer Shell, 92 lb. | 8-inch Howitzer Shell, 46 lb. | 24 Pr. Howitzer Shell, 16 lb. | ||||
| Range in yards. | Charge. | Eleva- tion. | Charge. | Eleva- tion. | Charge. | Eleva- tion. |
| lb. oz. | deg. | lb. oz. | deg. | lb. oz. | deg. | |
| 400 | 2 8 | 6¼ | 1 8 | 6 | 9 | 4¾ |
| 2 | 8½ | 1 | 9½ | 6 | 7½ | |
| 600 | 3 | 6½ | 1 8 | 8¼ | 1 | 4¾ |
| 2 8 | 8¼ | 1 4 | 10 | 12 | 5¼ | |
| 9 | 7½ | |||||
| 800 | 4 | 6¼ | 2 8 | 6¼ | ||
| 3 8 | 7½ | 2 | 6½ | |||
MORTARS.
Practical rules.
To find the Charge for a given Range at 45° elevation.
13 inch Mortar.—To the range, in yards, add half the range, multiply the sum by ·03 for the charge, in ounces.
10 inch Mortar.—When the range is under 1350 yards, add to the range 160, and multiply by ·02; and if the range is over 1350 yards, add one-fifth of the range, and multiply by ·02 for the charge, in ounces.
8 inch Mortar.—To the range, in yards, add 20, and the sum multiplied by ·015 will give the charge, in ounces.
5½ inch Mortar.—To the range in yards, add 150, and multiply by ·08, for the charge, in ounces.