THE ROYAL ARTILLERY INSTITUTION. 
235 
all the other pieces. The ranges of the different pieces differ perhaps more than 
might have been expected under such circumstances, owing no doubt to the 
unequal capacity of the different chambers, and the differences in the lengths 
of the guns, but they are far more regular than those of smooth-bored pieces 
with reduced charges; and they concur with the previous observations given 
in the Beport of the Ordnance Select Committee, which I am permitted to 
quote in the Appendix, p. 246, in proving the great superiority of rifled ord¬ 
nance for this as for almost every other service of w T ar. A Table will also be 
found in the Appendix, p. 251, giving the elevations for each 100yds. deducible 
from this practice. That the pieces employed are very unnecessarily heavy for 
the duty, will occur to every one. The same reasons which led to the employ¬ 
ment of smootli-bored howitzers under certain circumstances, instead of guns, 
will when rifled gunnery attains its full development, cause rifled howitzers 
to be added to our material, to throw shells w r ith small charges for high 
angle firing, and to occupy positions which do not require or cannot take, so 
large and costly a piece as a rifled gun of the intended calibre. 
When we make rifled pieces for charges not exceeding those usual with 
howitzers, it will scarcely be necessary to make them of wrought-iron, cast- 
iron will probably be strong enough for such purposes—the questions there¬ 
fore opened up by this enquiry embrace a wider field than is perceived at first 
glance. 
Table IY. 
Hate. 
No. of rounds. 
Elevation. 
20- 
pr. 
Charge. 
Mean reduced 
time of flight. 
Ranges. 
Mean difference 
of range. 
Mean observed 
deflection. 
Mean reduced 
deflection. 
Min. 
Max. 
Mean. 
1863. 
0 
lbs. 
sec. 
yds. 
yds. 
yds. 
yds. 
yds. 
yds. 
January 29 . 
6 
8 
0*469 
3-92 
373 
451 
413 
18-4 
0-80 
0-44 
February 5 . 
5 
10 
4-31 
441 
486 
459 
12-0 
8-44 
0-44 
do . 
6 
12 
}} 
4-95 
459 
647 
510 
30-0 
8-76 
0-68 
February 9 . 
6 
15 
» 
6-02 
507 
645 
528 
12-2 
5-06 
0-76 
January 29 . 
5 
8 
0-535 
4-20 
466 
519 
494 
21-2 
0-84 
0-36 
February 5 . 
5 
10 
5-02 
508 
601 
542 
27-6 
9-12 
0-30 
February 9 . 
5 
12 
6-00 
589 
696 
648 
35-5 
4-84 
1-56 
do . 
6 
15 
„ 
6-82 
647 
722 
694 
21-0 
4-38 
1-02 
Table Y. 
40- 
•pr. 
January 29 . 
5 
8 
0-875 
4-28 
514 
536 
525 
7-6 
2-04 
0-60 
February 5 . 
5 
10 
}) 
4-16 
660 
690 
626 
45-2 
1-72 
0-42 
do . 
5 
12 
|| 
5-69 
575 
721 
653 
41-4 
2-36 
0-68 
February 9 . 
5 
15 
» 
7-11 
780 
830 
799 
12-8 
0-88 
0-90 
January 29 . 
5 
8 
1-000 
4-55 
576 
634 
616 
18-4 
1-80 
0-48 
February 5 . 
5 
10 
)} 
5-23 
680 
714 
699 
7-6 
1-68 
0-38 
February 9 . 
6 
12 
6-55 
813 
861 
*839 
18-0 
1-65 
1-05 
do . 
5 
15 
7-66 
965 
1002 
999 
12-2 
1-12 
1-48 
* Mean of four rounds. 
