408 
MINUTES OF PROCEEDINGS OF 
Table IY. 
Practice with common shells of 100 lbs. from both guns, corresponding 
with Table I. of this Report, except that the shells had an ogival form of 
front. 
Date. 
Gun 
and charge. 
No. of rounds, 
fired. 
1 Corrected j 
| elevation. 
Mean windage 
over body of 
shell. 
Mean 
recoil 
on a dry 
platform. 
Time of 
flight 
corre¬ 
sponding 
to mean 
range. 
Ranges. 
Mean difference 
of range. 
Mean observed 
deflection. 
Mean reduced 
deflection. 
Min. 
Max. 
Mean. 
French 
O 
/ 
in. 
ft. 
sec. 
yds. 
yds. 
yds. 
yds. 
yds. 
yds. 
6. 4. 65. 
7-in. M. L. 
6* 
2 
0 
0-09 
—. 
— 
— 
— ' 
— 
— 
— 
— 
a 
20 lbs. 
15f 
2 14 
n 
3-9 
3-68 
1,387 
1,462 
1,429 
11-9 
0-8 
0-8 
n 
n 
20 
5 
7 
n 
3-3 
7-40 
2,705 
2,800 
2,748 
21-6 
2-4 
1-9 
n 
n 
20 
10 
4 
n 
2.5 
13-32 
4,484 
4,648 
4,553 
35-0 
24-1 
5-6 
Shunt 
n 
7-in. M. L. 
5* 
2 
0 
0-065 
— 
— 
— 
— 
— 
— 
— 
— 
u 
20 lbs. 
15f 
2 
14 
a 
6-2 
3-47 
1,400 | 1,540 
1,450 
33-9 
0-6 
0-5 
11 
a 
20 
5 
7 
a 
5-2 
7-41 
2,744 2,882 
2,809 
32-3 
5-6 
2-1 
II 
u 
20 
10 
4 
n 
4-6 
13-36 
4,516 4,676 
1 
4,588 
44-9 
32-5 
6-2 
* These shells filled with powder and plugged, were fired out to sea, to ascertain if they would 
burst; none did so. 
f The means are of 14, one shell of each kind having broken up at the muzzle of the gun. 
The loading with the French gun, as noticed in previous reports, was somewhat easier than with 
the shunt. 
The iron traversing platform was observed to shake more than the one the shunt gun was 
mounted on ; the only cause to be assigned for this is the extra weight of the French gun. 
9. An inspection of Tables III. and IY. will shew that in the solid shot 
trial the French had a slight advantage both in range and accuracy; and that 
in the shell practice the shunt had a slight advantage in range although the 
French still maintained its general superiority in accuracy. During the 
practice the men employed in loading were interchanged occasionally, and 
their opinion was asked as to the comparative facility of loading in the two 
guns, it was on the whole expressed in favour of the French gun, but the 
difference was not great, and there was no real difficulty with either gun. 
10. The initial velocities given by the two guns appears practically alike, 
for although the French has the advantage with 12 lbs. charge, the shunt 
has the best of it with 20 lbs. and 25 lbs., but it had by accident the benefit 
of a shot with slightly less windage than the other. 
