THE ROYAL ARTILLERY INSTITUTION. 
261 
Table IX. 
Table giving in detail the results of practice carried on at Shoeburyness, 
on various occasions, to ascertain the "jump ” of different guns:— 
>d 
Height of cen¬ 
-5Q 
tre of hits above 
5$ . 
o£> 
g II 
O 
(3 
Gun. and date 
of 
Weight 
A © 
be© 
'© 'o 1 
^ ft 
necou. 
horizontal 
level. 
Mean veloc: 
in 40yds. 
Oi ^ 
.IS 
43 k 
o ^ 
© 
it 
ft II 
° © 
3 £ 
"o 
6 
fc 
experiment. 
charge. 
Nature. 
Amount. 
Indi¬ 
vidual. 
Mean, 
= a. 
§ 
S c? 
z Fh 
§w 
■S3 
P § 
3« 
c 
H 
bJO-w 
S k 
*3 
P4 
^d 
lb. oz. 
lb. 
ft. 
ins. 
ins. 
ft. 
secs. 
ins. 
ins. 
1 1/ 
( 16-pr. -) 
1 
) R.M.L. I 
) No. 384, f 
3 0 
16-0 
Checked* 
4*5 
3-0 ' 
(.21,11. 72. ) 
1*7 
1-7 
2 
3 
n 
n 
11 
It 
II 
II 
11 
n 
2T4 
1344 
•0893 
1-54 
3*68 
8 47 
4 
n 
II 
It 
Free 
15-0 
2-4 
5 
n 
II 
II 
II 
14-0 
1-9 J 
6 
n 
2 8 
11 
11 
12'0 
1-6 
7 
„ 
n 
ti 
„ 
12-0 
2*2 1 
| 
8 
n 
ii 
n 
Checked* 
4-0 
1*2 
2-16 
1266 
•0948 
1-74 
3-90 
9 19 
9 
n 
n 
n 
n 
„ 
4-0 
1-8 J 
10 
ii 
„ 
ii 
ii 
ii 
C 12-pr. 
1 
) R.B.L., / 
) No. 324, f 
1 8 
11*5 
Free 
6-0 
7-4 1 
1 
(.21. 11. 72. ) 
I 
2 
It 
it 
ii 
„ 
„ 
9-2 
9-2 J 
r 
I 
8-7 
1143 
•1050 
2-13 
10-83 
25 51 
3 
II 
„ 
„ 
11 
ii 
1 
( 4-pr. 
1 
) R.B.L. / 
1 No. 1347, C 
1 1*6 
9*37 
n 
5'0 
11*7 •> 
(.25. 11. 72. ) 
2 
3 
It 
11 
ii 
ii 
n 
11 
n 
5'5 
9’9 
127 
* 
11*36 
1166 
•1029 
2’05 
13-41 
32 1 
4 
II 
it 
i, 
„ 
ii 
10-0 
5 
u 
ii 
ii 
n 
ii 
12-5 > 
C 9-pr. ^ 
1 
) R.M.L. [ 
) No. 366, f 
(. 23. 4. 69. j 
1 5 
9*0 
it 
not taken 
6-8 ^ 
4'7 
3-8 
2 
3 
II 
11 
n 
it 
n 
it 
n 
It 
II 
- 
3-83 
1247 
•0962 
1-79 
5-62 
13 25 
4 
n 
„ 
„ 
it 
II 
17 
5 
„ 
„ 
„ 
„ 
II 
4-5 
6 
" 
n 
it 
If 
1*5 ^ 
It is evident from the foregoing table that the angle of departure is 
not appreciably affected by the recoil being checked; and that the gun 
that had the quickest recoil in reality f threw lower than the other guns. 
We now come to that part of the subject which refers to the recom¬ 
mendations of the Committee under whose supervision the trial of the 
two guns took place. 
It must here be remarked, that I write simply as a member of the 
Royal Artillery Institution, and not as a member of a Committee. 
It appears that during the discussion which followed the reading of 
"Flat Trajectories/* an officer remarked that, “ although the Committee 
on the 16-pr* field gun had reported in favour of the 3’6-in. bore, all 
who had heard the arguments (of the lecturer) were probably convinced 
that the 3'3-in. would be better.** 
* By a break on each extremity of dxletree. 
f See p. 255, line 5. 
