286 
MINUTES OF PROCEEDINGS OF 
headed, penetration would also be effected at the longer range. This may be deduced 
from the comparative results obtained with elliptical headed and hemispherical headed 
chilled shot; the advantage derived from the elliptical form of head in that material 
being very great. 
It may be inferred from round ISFo. 19, fired with reduced charge, that the effect 
of the 100-pr. S. B. gun, at a range of 1200 yds., would be perfectly insignificant 
upon an iron-plated ship. 
The fastenings of the target suffered very severely. During the nineteen rounds 
which were fired in this experiment, nineteen armour-plate bolts, thirty-seven backing 
bolts, and twenty-seven rivets were broken; but the armour-plate bolts on *Major 
PallisePs plan proved much stronger than the ordinary bolts, only three having broken 
during the experiment, notwithstanding that more than two-thirds of the number of 
rounds were fired at a portion of the target which was secured by these bolts. 
J. H. LEEBOY, Brigadier-General, 
February 12, 1865. President. 
6 
o 
a 
Projectile. 
a 
o 03 
Indent. 
Initial velocity in ft. 
Number of roun 
6 
8 - 
So 
o 
o 
s 
<8 
a 
-a 
o 
o 
I 
£ 
Nature. 
Weight in lbs. 
Form 
cylin¬ 
drical. 
Length and 
diameter in in. 
Charge in lbs. 
Range in yds. 
Elevation. 
Radial deviate 
from bull’s eye 
centre of shot m 
Depth of 
Diameter of 
hole. 
REMARKS. 
/ 
/ // 
// 
6th January, 1865. 
16 
972 
t 
Firth’s 
steel. 
105 
Sphe¬ 
rical 
8-7 
25 
200 
16 
0 12 
9x9 
Not 
obs. 
Struck on centre plate 16" from bottom 
and 10" right of centre of target; 
struck between two ribs and on a 
bolt (Major Palliser’s), which was 
driven out 2",but not broken; shot 
slightly cracked, depth to nearest 
part of shot 6‘5"; skin cracked 
longitudinally, and bulged two ribs, 
and two angle irons cracked; five 
wood bolts and one rivet broken; 
one wood bolt driven in 4". 
17 
973 
// 
Brown’s 
steel. 
104-5 
n 
II 
n 
n 
n 
2 6 
12-5 
x 9 
Struck on same hole as No. 972, in¬ 
creased the hole to 12*5" x 9-0"; 
sho tbroke up; skin opened to 2' 3" 
x l / 9"; piece of skin l y 4" turned 
back, remainder 1'6" x 10" broken 
off; fragments of both shot driven 
through target; one ordinary armour 
plate bolt and two rivets broken; 
right rib broken in fresh place; one 
Palliser armour plate bolt remain¬ 
ing in bent part of skin and not 
broken. 
18 
974 
// 
It 
n 
II 
II 
n 
n 
1 9 
Struck close to No. 946, distance from 
centres of holes 10"; struck between 
two ribs ; shot broke up; inner skin 
opened over an area of l y 6" x l y 3", 
andmuch bulged; pieceof skin turned 
back measuring 1'6" x 1'3"; five 
rivets and two wood bolts broken. 
6th January, 1865. 
19 
979 
II 
Firth’s 
steel. 
104 
II 
II 
9-75 
n 
34 
1-7" 
Struck on bolt between two ribs 8"from 
top and 7' from left of right lower 
plate; slight crack in indent; plate 
buckled out 0-8" over a length of 
4 ft.; one rivet broken, and a portion 
of one bolt driven out. 
* Reduced in the shank to the size to which the bolt is reduced at the screwed end by the screw thread, 
f 100-pr. S.B. gun, of 6^tons, Expl, No. 282. 
