166 3H011T NOTES ON TUOEESSIONAL SUBJECTS. 
103. The following table gives the calculated remaining velocity and energy, 
at various distances, of Palliser projectiles fired with battering charges of P. powder, 
from the 12-in. rifled M.L. gun of 35 tons. 
Projectile, 700 lbs. weight; 11-92 ins. diameter; charge, 110 lbs. 
Range. 
V. 
Total 
energy. 
Energy 
per inch 
of shot’s 
circum¬ 
ference. 
! 
Range, j 
V. 
Total 
energy. 
Energy 
per inch 
of shot’s 
circum¬ 
ference. 
yds. 
ft. 
ft. tons. 
ft. tons. 
yds. 
ft. 
ft. tons. 
ft. tons. 
0 
1300 
8205 
219 
2200 
1094 
5810 
165 
200 
1277 
7915 
211 
2400 
1080 
6660 
151 
400 
1256 
7655 
204 
2600 
1068 
6535 
147 
600 
1236 
7415 
198 
2800 
1056 
6415 
144 
800 
1216 
7175 
192 
3000 
1044 
6295 
141 
1000 
1196 
6945 
186 
3200 
1032 
6175 
138 
1200 
1177 
6725 
180 
34u0 
1022 
6070 
135 
1400 
1159 
6520 
174 
3600 
1012 
4970 
133 
1600 
1141 
6320 
169 
3800 
1002 
4875 
130 
1800 
1125 
6140 
164 
4000 
994 
4795 
128 
2000 
1109 
5970 
159 
W. H. N. 
104. The following abstract shows the pressures observed from time to time 
during practice at Shoeburyness with the 12-in. rifled M.L. gun of 25 tons, 
Expl. No. 372. 
Date of 
1 
Nature and 
Charge and 
approximate 
muzzle 
velocity. 
No. of 
round. 
Pressure by crusher gauge 
in tons per square inch at 
experiment. 
weight of 
projectiles. 
A 
Axis, or end 
of bore. 
B 
12 ins. from 
end of bore. 
22. 9. 71. 
Com. shell, 
495 lbs. 
85 lbs. P. 
1350 ft. 
1 
17-4 
16-1 
| 
a 
n 
2 
17-8 
177 
\) 
a 
n 
3 
16-6 
15*8 
1! 
n 
n 
4 
16-7 
16-3 
n 
n 
6 
16-8 
14-7 
// 
u 
„ 
6 
19-8 
17-2 
9. 4 72. 
Shvap. shell, 
o33'5 lbs. 
! 65 lbs. P. 
; 1100 ft. 
1 
12-8 
11-7 
V 
n 
2 
13-5 
13-6 
n 
n 
n 
3 
12-2 
11-7 
n 
n 
j 
n 
4 
11-6 
119 
20. 9. 72. 
I 
j Case shot, 
! ' 246 lbs. 
85 lbs. P. 
1 
14-5 
14-0 
// 
", 
n 
2 
15-1 
15-2 
n 
// 
: V 
a 
15-2 
15”2 
W. H. N. 
