12 pounders.—If the whole length of fuze be left in the shell, the rocket may be expected to burst at about 3000 yards; elevation, 40 degrees.

If the whole of the fuze composition is bored out, and the rocket composition left entire, the shell may be expected to burst at about 1300 yards; elevation, 15 degrees. If the rocket composition be bored to within one inch of the top of the cone, the shell may be expected to burst at about 500 yards; elevation, 9 degrees.

6 pounders.—If the whole length of the fuze be left in the shell, the rocket may be expected to burst at about 2300 yards; elevation, 37 degrees. If the whole of the fuze composition be bored out, and the rocket composition be left entire, the shell may be expected to burst at about 950 yards; elevation, 13¾ degrees. If the rocket composition be bored to within one inch of the top of the cone, the shell may be expected to burst at about 500 yards; elevation 9½ degrees.

3 pounders.—If the whole length of the fuze be left in the shell, the rocket may be expected to burst at about 1850 yards; elevation, 25 degrees. If the whole of the fuze composition be bored out, and the rocket composition be left entire, the shell may be expected to burst at about 750 yards; elevation, 10 degrees. If the rocket composition be bored to within one inch of the top of the cone, the shell may be expected to burst at about 500 yards; elevation, 8 degrees.

Ranges, and Elevation of Congreve rockets.
Ranges.Elevation.
12 Pounder.6 Pounder.
Yards.Degrees.Minutes.Degrees.Minutes.
400 745
500 845
60010 0 945
70011301030
80012451115
90013301145
100014 01230
110014451315
12001514 0
1250161430

EXERCISE OF ROCKETS.[23]

The 24 pounder is used for siege purposes. The 12 and 6 pounders are for service in the field.

Exercise of 12 and 6 pounder, or Field Rockets.

Telling off the Detachment.

The detachment falls in, in rear of and facing the carriage, and is told off as for gun exercise.