| Range, Elevation, &c., of 12, 10, and 8 inch Guns, 32 Pr. Carronade Gun, and 10, and 8 inch Iron Howitzers. | |||||||||||||||
| P. B. = Point Blank. | |||||||||||||||
| Nature of Ordnance. | Length. | Weight. | Charge. | Elevation in degrees; Range in yards; Flight in seconds. | |||||||||||
| P.B. | 1° | 2° | 3° | 4° | 5° | 6° | 7° | ||||||||
| feet. in. | cwt. qrs. | lb. oz. | |||||||||||||
| 12 in. Gun (Hollow shot) | 8 | 4 | 90 | 3 | 12 | 240 | 540 | 790 | 1020 | 1250 | 1400 | 1550 | |||
| { | 7 | 6 | 57 | 3 | 7 | 210 | 460 | 720 | 935 | 1160 | 1350 | 1500 | |||
| 10 Do. (H. S.) | { | 8 | 4 | 62 | 1 | 8 | 250 | 570 | 810 | 1030 | 1230 | 1400 | |||
| { | 9 | 4 | 84 | 12 | 325 | 630 | 930 | 1200 | 1460 | 1700 | |||||
| 8 Do. (H. S.) | 6 | 8½ | 50 | 7 | 210 | 320 | 570 | 830 | 1130 | 1300 | |||||
| 8 Do. (Solid shot) | 8 | 6 | 60 | 9 | 7 | 340 | 640 | 960 | 1190 | 1300 | 1500 | ||||
| 8 Do. | } | 9 | 65 | 10 | 300 | 580 | 940 | 1220 | 1480 | 1700 | 1880 | 2120 | |||
| Time of Flight | } | ¾” | 2” | 3” | 4¼” | 5½” | 7” | 8” | 8¾” | ||||||
| Ditto. (Hollow shot) | { | 9 | 65 | 12 | 370 | 700 | 1050 | 1230 | 1540 | 1700 | 1831 | 1980 | |||
| Time of Flight | { | 1” | 2¼” | 3” | 4¼” | 6” | 6½” | 7¾” | 8” | ||||||
| 32 Pounder Carronade Gun | 5 | 25 | 4 | 200 | 470 | 730 | 960 | ||||||||
| 10 inch iron Howitzer | 5 | 40 | 7 | 600 | 1200 | 1320 | |||||||||
| 8 inch Ditto. | 4 | 21 | 4 | 450 | 730 | 975 | |||||||||
| Range, Elevation, &c., of 12, 10, and 8 inch Guns, 32 Pr. Carronade Gun, and 10, and 8 inch Iron Howitzers. | |||||||||||||||
| (Part 2 of 2) | |||||||||||||||
| Nature of Ordnance. | Length. | Weight. | Charge. | Elevation in degrees; Range in yards; Flight in seconds. | |||||||||||
| 8° | 9° | 10° | 11° | 12° | 13° | 14° | 15° | ||||||||
| feet. in. | cwt. qrs. | lb. oz. | |||||||||||||
| 12 in. Gun (Hollow shot) | 8 | 4 | 90 | 3 | 12 | ||||||||||
| { | 7 | 6 | 57 | 3 | 7 | ||||||||||
| 10 Do. (H. S.) | { | 8 | 4 | 62 | 1 | 8 | |||||||||
| { | 9 | 4 | 84 | 12 | |||||||||||
| 8 Do. (H. S.) | 6 | 8½ | 50 | 7 | |||||||||||
| 8 Do. (Solid shot) | 8 | 6 | 60 | 9 | 7 | ||||||||||
| 8 Do. | } | 9 | 65 | 10 | 2290 | 2430 | 2510 | 2710 | 2930 | 2990 | 3140 | 3250 | |||
| Time of Flight | } | 9¾” | 10½” | 11½” | 12¼” | 12½” | 13” | 13½” | 14” | ||||||
| Dittoo. (Hollow shot) | { | 9 | 65 | 12 | 2090 | 2310 | 2400 | 2510 | 2720 | 2830 | 2870 | 2220 | |||
| Time of Flight | { | 8¾” | 10” | 10½” | 11½” | 12½” | 13½” | 14” | 15½” | ||||||
| 32 Pounder Carronade Gun | 5 | 25 | 4 | ||||||||||||
| 10 inch iron Howitzer | 5 | 40 | 7 | 1500 | 1926 | 2078 | |||||||||
| 8 inch Ditto. | 4 | 21 | 4 | 1227 | 1506 | 1725 | |||||||||
| The above Ranges for the 12 and 10 inch Guns are with hollow shot, weighing respectively 112 lb. and 84 lb. The 8 inch Gun carries either hollow shot, plugged, 48 lb.; or shell, 46 lb. | |||||||||||||||
| Vide also Naval Gunnery. [Table of Tangent Practice, 8 inch Gun.] | |||||||||||||||
| 56 Pounder Gun, and 68 Pounder Gun. | |||||||||||||||
| Weight, Ranges, &c. | |||||||||||||||
| Gun. | Shot. | Charge. | P B | 1° | 2° | 3° | 4° | 5° | 6° | 8° | 10° | 12° | Above Plane. | ||
| cwt. | lb. | lb. | yds. | yds. | yds. | yds. | yds. | yds. | yds. | yds. | yds. | yds. | feet. | in. | |
| 56 Pr. | 98 | S S | 16 | 490 | 930 | 1340 | 1720 | 2000 | 2200 | 2400 | 2740 | 3040 | 3320 | 5 | |
| 87 | S S | 14 | 380 | 900 | 1310 | 1660 | 1940 | 2100 | 2310 | 2580 | 2940 | 3270 | 8 | ||
| 68 Pr. | 112 | S S | 20 | 400 | 980 | 1400 | 1760 | 1980 | 2240 | 2480 | 2840 | 3130 | 3400 | 8 | |
| 95 | S S | 15 | 310 | 700 | 1070 | 1430 | 1710 | 1930 | 2130 | 2520 | 2890 | 3180 | 5 | 4 | |
| 95 | Shell | 16 | 350 | 850 | 1250 | 1560 | 1840 | 2100 | 2350 | 2690 | 3000 | 3300 | 5 | 4 | |
| 87 | S S | 14 | 300 | 680 | 1050 | 1360 | 1650 | 1900 | 2140 | 2490 | 2820 | 3150 | 8 | ||
| 87 | Shell | 14 | 310 | 710 | 1080 | 1350 | 1610 | 1850 | 2080 | 2450 | 2800 | 3140 | 8 | ||
| 8 Inch Gun. | ||||||||
| Length, 9 feet; Weight, 65 cwt.; Height of gun above the plane, 5 feet 7 inches. | ||||||||
| Nature | Charge. | Eleva- | First | Flight. | Second | Extreme | Time of | Number of |
| of shot. | tion. | graze. | graze. | range. | flight. | grazes. | ||
| lb. | Degrees. | Yards. | Sec. | Yards. | Yards. | Sec. | ||
| Solid | 10 | P. B. | 315 | 1” | 901 | 3207 | 20” | 23 |
| 10 | 1° | 660 | 2” | 1006 | 2803 | 19” | 18 | |
| 10 | 1½° | 818 | 3” | 1240 | 2433 | 16” | 13 | |
| 9 | P. B. | 343 | 1” | 776 | 2683 | 17” | 12 | |
| 9 | 1° | 615 | 2” | 970 | 2483 | 15” | 10 | |
RICOCHET FIRING.
1. When adopted in the field, the guns should seldom be elevated above 3 degrees, as the objects fired at are generally cavalry and infantry, and the lower the angle the longer will the shot preserve its force, and have effect.
2. In the ricochet of a fortification of any kind, the elevation should seldom exceed 10 degrees to throw the shot over the parapet a little higher than the level of the battery; and, on the whole, the best elevation to enfilade a work is from 6 to 9 degrees, measured above the crest of the parapet with corresponding charges.
3. The charge, and elevation being known for any range, when the gun and parapet are on the same level, the same charge, and elevation may be used so long as the difference of level does not exceed one-twentieth of the horizontal distance between them, the elevation being given by the tangent scale, and the gun laid at the parapet, whether above or below its own level.