THE ROYAL ARTILLERY INSTITUTION. 
397 
21. The charge of 12 lbs. being that of the service breech-loading 7-in. 
gun, the Committee subjoin a table by which it will be seen that, notwith¬ 
standing the advantage the muzzle-loading guns had in point of length and 
weight, they none of them quite equal that gun in point of accuracy, even 
with the shot of the third supply, weighing 100 lbs., which are to be chiefly 
regarded. 
However, the Trench rifled gun is but inferior up to 5°. The practice 
quoted was made in February last, to try a 110-pr. gun from which the 
muzzle grip had been removed.* Something may, perhaps, be allowed for a 
small difference in the form of head, but this difference was not sufficient to 
have operated materially against the competitive shot. 
Table IY. 
2° 
5° 
10° 
Gun. 
■■d 
§ 
i-y 
© 
CD 
CD 
P 
CD 
„© 
© 
CD 
CD 
a 
CD 
too 
© 
CD 
P 
© 
_© 
© 
© 
03 
n 
© 
bn 
CD 
O 
a 
2 
Tj 
<U 
§ 
Charge. 
Shot. 
2 
< o 
& 
Mean rar 
Mean difl 
of range. 
Mean red 
deflection 
5 
o 
6 
ft 
| Mean ran 
Mean diff 
of range. 
Mean red 
deflection 
p 
o 
f-t 
o 
6 
£ 
Mean ran. 
Mean difft 
of range. 
Mean redi 
deflection. 
j lbs. 
lbs. 
yds. 
yds. 
yds. 
yds. 
yds. 
yds. 
yds. 
yds. 
yds. 
2-5 
2-9 
Armstrong 7-in. B.L. 
12 
1 
110 
20 
984 
10*7 
0-7 
20 
1972 
13-0 
1-6 
3 10 
110 
3468 
3418 
11*8 
27-9 
French 7-in. M.L. ... 
12 
110 
4 
1152 
19-7 
0-8 
4 
2219 
54*5 
2-8 
4 
3908 
136*5 
8-3 
n n 
// 
100 
11 
1143 
11*5 
0-5 
6 
2285 
46-2 
1-5 
{S 
3951 
3868 
12-4 
31-2 | 
19-2 
7-6 
Scott’s 7-in. M.L. ... 
// 
110 
5 
1213 
21-4 
0-8 
5 
2286 
49-6 
5-4 
5 
3909 
109-8 
40-7 
a a 
// 
100 
— 
— 
— 
— 
10 
2201 
62-2 
3-2 
5 
3695 
48-0 
3-6 
// // 
n 
100 
10 
1157 
36*9 
1*7 
— 
— 
— 
— 
5 
3730 
40*8 1 
18-0 
Lancaster’s 7-in. M.L. 
// 
110 
5 
1198 
25*4 
0-8 
5 
2287 
67-2 
1-2 
5 
3907 
24-8 j 
4-0 
a a 
// 
100 
11 
1173 
50-5 
3-7 
— 
— 
— 
— 
— 
— 
_ | 
n n 
ii 
100 
— 
— 
— 
— 
10 
2236 
60-4 
4-2 
| 
C5 
16 
3945 
4010 
58-0 ! 
42-8 : 
i 
21-0 
16-3 
22. The Committee having received permission on the 29th October, 
80 
1864 n.No ., Minute 13,538 to try a 149 cwt. 7-in. gun, shunt rifled, in 
721 
comparison with the above competitive guns, are now waiting for the means 
of doing so; and until such comparison is made, do not feel warranted 
in making any definite recommendation on the facts now reported. 
The guns also being essentially shot guns, the present trial has been 
restricted to solid projectiles, nor do the Committee think it probable that 
any disparity will appear in their performance with longer projectiles, which 
can alter the order in which they now stand, but at the same time they think 
it quite necessary to fire some common shells; and as the differences as yet 
elicited between the three systems left in competition are not such as to 
disqualify absolutely any one of them, they wish to reserve their final report 
until these shells have been fired, and the shunt gun tried. 
* See Minute 11,145, p. 30. 
