THE ROYAL ARTILLERY INSTITUTION 
401 
Appendix 1 C. — continued . 
Date. 
No. of 
rounds 
fired. 
Eleva¬ 
tion. 
Charge. 
Mean 
range. 
Mean 
difference 
of range. 
Mean 
observed 
deflection. 
Mean 
reduced 
deflection. 
Remarks, 
1864. 
O 
lbs. 
yds. 
yds. 
yds. 
yds. 
Solid shot; 
copper centreing studs ; 3rd supply; 
100 lbs. 
Sept. 27 
10 
2 
25 
1520 
34-4 
3-8 
1-5 
Painted. 
Oct. 6 
10 
5 
n 
2784 
36*9 
24*1 
2-6 
Rusted. 
Sept. 28 
6 
10 
a 
4607 
36-8 
121*9 
11-5 
Painted. 
« 28 
5 
10 
a 
4619 
37*0 
132-1 
9-4 
Rusted. 
/; 27 
10 
2 
20 
1416 
21-2 
6-3 
3-3 
Oct. 6 
10 
5 
n 
2640 
17*7 
24-8 
4-8 
Rusted. 
Sept. 28 
5 
10 
n 
4487 
43*8 
124-9 
61 
Painted. 
» 28 
5 
10 
it 
4510 
28-0 
102-1 
28-9 
Rusted. 
// 27 
11 
2 
12 
1173 
50-5 
5-6 
3-7 
Oct. 6 
10 
5 
n 
2236 
60-4 
23-6 
4-2 
Rusted. 
Sept. 28 
5 
10 
n 
3945 
58*0 
103-3 
21-0 
Painted. 
„ '28 
5 
10 
n 
4010 
42-8 
' 80-9 
16-3 
Rusted. 
Round shot of 43*4 lbs. 
; riveted to wood bottoms. 
Oct. 11 
10 
2 
20 
1387 
99-6 
5-8 
6-2 
n 
5 
5 
n 
2232 
84-8 
13-0 
10-1 
a 
10 
2 
12 
1157 
64-1 
5-6 
4-3 
n 
10 
5 
n 
1943 
87-8 
14-3 
7*0 
Loose round shot. 
Oct. 12 
10 
6 
12 | 
| 1956 | 69*3 
14-6 
8-6 
Reco 
vered loose round shot. 
Oct. 13 
10 
3 
20 
1262 
72-7 
5-6 
4-8 
,, 13 
5 
5 
n 
2211 
20*4 
13-3 
12-2 
„ 13 
10 
2 
12 
1096 
68*2 
6-6 
3-3 
Appendix 1 D. 
Abstract of results of shot practice with the 7-in. muzzle-loading gun, 
rifled in shallow grooves, and firing Mr Jeffery*s projectiles with leaden 
bases. 
Shot of 1st supply, 110 lbs. 
Date. 
No. of 
rounds 
fired. 
Eleva¬ 
tion. 
Charge. 
Mean 
range. 
Mean 
difference 
of range 
Mean 
observed 
deflection. 
Mean 
reduced 
deflection. 
1864. 
o 
lbs. 
yds. 
yds. 
yds. 
yds. 
July 14th ... 
1 
2 
25 
1402 
•— 
1-6 
— 
13th ... 
10 
5 
n 
2562 
115-3 
12-0 
8-0 
„ 12th ... 
5 
10 
n 
4340 
61-8 
39-5 
12-8 
The practice was stopped in consequence of large pieces of lead coming 
off the shot. Some 2-in. deal targets, 230 ft. in front, were penetrated. 
A mantelet of fth inch iron, 50 ft. in front, was struck in 13 places, and 
deeply dented; two pieces passed through it. A flagstaff, 156 ft. from the 
gun, was struck in many places, and the halliards cut. 
