72 
MINUTES OF PROCEEDINGS OF 
Table I. 
TABLE SHEWING THE VELOCITIES OF DIFFERENT NATURES OF AMERICAN 
GUNS, AT VARIOUS DISTANCES. 
Nature of gun. 
Charge, 
lbs. 
Projectile. 
Initial 
Velocities, 
in feet, at 
Nature. 
Weight. 
lbs. 
velocity 
in feet. 
100 yds. 
200 yds. 
400 yds. 
1000yds. 
42-pr. 
8-in. Columbiad .. 
10-5 
shot 
42-7 
1600 
1514 
1435 
1295 
976 
10-0 
Si 
65 
1375 
1314 
1240 
1154 
916 
do do . 
10-0 
shell 
60 
1570 
1474 
1360 
1236 
907 
10-in. do . 
18-0 
shot 
127. 
1315 
1270 
1217 
1150 
957 
do do . 
18-0 
shell 
101 
1475 
1409 
1335 
1233 
970 
15-in. do . 
40-0 
a 
315 
1250 
1210 
1160 
1080 
890 
11-in. Dahlgren . 
15-0 
a 
135 
1200 
1140 
1090 
1009 
840 
10-in. do . 
12-0 
a 
100 
1150 
1090 
1036 
938 
720 
Table II. 
TABLE SHEWING INITIAL VELOCITIES OF RIFLE GUNS BY EXPERIMENT. 
AND CALCULATED FROM THE EQUATION 
/iTTA velocity. 
V — 1400 a /■ - . - C = weight of charge. 
yj W W~ weight of shot. 
Nature of gun. 
Weight 
of 
charge. 
lbs. 
Weight 
of 
shot. 
lbs. 
Experimental 
velocity 
corrected for 
a uniform 
powder. 
Calculated 
velocity. 
Remarks. 
f 12-pr. A. 
1-5 
11-75 
1240 
1225 
1 Same diameter of 
. 
2-0 
8-00* 
1730 
1715 
) shot, viz. 3-074 in. 
40-pr. 
5 
41-5 
1165 
1190 
6 
110-pr. 
12 
111 
1125 
1127 
)} . 
12 
103 
1166 
1170 
m ‘ 
. 
16 
111 
1307 
1302 
'■cs 
)f . 
14 
111 
1211 
1217 
s 
. 
12 
150 
995 
970 
hi 
)} . 
11 
174 
892 
862 
150-pr. 
40 
150 
1770 
^300-pr. 
75 
300 
1715 
Table III. 
TABLE SHEWING THE VELOCITIES OF DIFFERENT NATURES OF GUNS AT 
DIFFERENT DISTANCES, WITH THE LOSS OF VELOCITY CAUSED BY THE 
RESISTANCE OF THE AIR. 
© 
fi? 
Weight 
of shot. 
Initial 
velocity. 
Velocities, in feet, at 
Lost in feet in 
Nature of gun. 
eS 
d 
30 
yds. 
100 
yds. 
200 
yds. 
30 
yds. 
100 
yds. 
200 
yds. 
68-pr. ... 
f 
lbs. 
16 
lbs. 
66 
ft. 
1579 
1553 
1488 
1422 
26 
91 
157 
16 
111 
1307 
1300 
1287 
1271 
7 
20 
36 
14 
111 
1211 
1205 
1193 
1178 
6 
18 
33 
110-pr. rifled Armstrong j 
12 
111 
1125 
1120 
1109 
1094 
5 
16 
31 
g un .... 1 
12 
103 
1166 
1160 
1149 
1133 
6 
17 
33 
11 
174 
892 
890 
885 
877 
2 
7 
15 
1 
12 
150 
995 
992 
983 
974 
3 
9 
18 
160-pr. smooth-bore gun 
40 
150 
1726 
1710 
1645 
1586 
16 
81 
140 
300-pr. rifled gun .. 
75 
300 
1715 
1708 
1690 
1665 
7 
26 
50 
160-pr. rifled gun . 
40 
150 
1770 
1762 
1737 
1704 
8 
33 
66 
* This is the service Royal Horse Artillery segment shell. 
