THE EOYAL ARTILLERY INSTITUTION. 
11 
ABSTRACT SHEWING THE MEAN INITIAL VELOCITIES OF VARIOUS SERVICE 
AND EXPERIMENTAL PROJECTILES, DETERMINED BY CAPTAIN ANDREW 
NOBLE, R.A., UNDER DIRECTION OF THE ORDNANCE SELECT COMMITTEE, 
BY MEANS OF NAVER’S ELECTRO-BALLISTIC APPARATUS. 
Nature 
of ordnance. 
*4 
§D 
Projectile. 
"§ . 
£*3 
Remarks 
}Z5 g 
2 
o 
Nature. 
Weight 
Diam. 
*3 
o o 
> 
: !2 
MO, 
Ihs.oz. 
Ibs.oz. 
in. 
ft. 
ft. 
10-in. gun, 87c 
10 
12 0 
hoi. shot 
88 5 
9-84 
1270*4 
1292*3 
5 
8 0 
Martin’s 
117 0 
9-84 
930*1 
940*6 
shell 
68-pr., 95c ... 
12 
16 0 
r. shot 
66 4 
7-91 
1553*3 
1579*0 
n 
7 
16 0 
nav. sh 
51 8 
7-91 
1769*4 
1809*9 
9 
16 0 
com. sh. 
49 14 
7-91 
1750*3 
1790*7 
}) 
6 
10 0 
Martin’s 
60 0 
7-84 
1287*6 
1308*5 
shell 
8-in. gun, 65c 
5 
10 0 
com. sh. 
hoi. sh. 
46 0 
7*85 
1455*0 
1487*9 
5 
10 0 
com. sh. 
49 14 
7*85 
1434*6 
1464*4 
5 
10 0 
Martin’s 
51 8 
7-92 
1475*8 
1506*4 
shell 
32-pr., 58c ... 
10 
10 0 
sol. shot 
31 6 
6*17 
1653*7 
1690*0 
11 
8 0 
31 6 
6-17 
1584*7 
1618*7 
11 
6 0 
” 
31 6 
6-17 
1418-8 
1447*5 
24-pr., 50c ... 
11 
8 0 
23 8 
5-60 
1679*5 
1720*5 
- Experiments to ascertain 
18-pr., 57e ... 
12 
6 0 
>» 
17 11 
5-09 
1646*8 
1690*6 
the Initial Velocity of 
12-pr., 18c ... 
10 
4 0 
12 10J 
4*52 
1718*6 
1769*8 
Projectiles fired with 
9 -jor. brass, 
at25yds 
Service Charges from 
smooth, 13|c... 
4 
0 14 
r. shot 
9 6 
4*08 
1011*2 
1101*6 
Service Guns. 
3 
1 8 
sol. shot 
9 5 
4*08 
1310*9 
at30yds 
1444*0 
9-pr., 13c. 
10 
2 8 
9 5f 
4*10 
1563*9 
1613*7 
6-pr., 6c . 
10 
1 8 
M 
6 3f 
3*57 
1435*3 
1484*5 
12-pr. hr., 6|c 
10 
1 4 
com. sh. 
8 12 
4*55 
1124*2 
1163*4 
24-pr. hr., 12c 
10 
2 8 
n 
16 11| 
6*595 
1218*0 
1252*7 
drs. 
Wall piece ... 
8 
8 
shot 
0 5| 
0*935 
1134*8 
1167*6 
drs. 
grs. 
Enfield rifle 
3 
2*5 
ser. ball 
530 
0*550 
1188*7 
1272*8 
Ibs.oz. 
lbs. oz. 
6-pr. A., 3|c 
15 
0 12 
s eg. sh. 
6 0 
2*585 
937*5 
946*4 
12-pr. A., 8|e 
10 
1 8 
11 9 
3*084 
1180*9 
1190*2 . 
' Preliminary experiments 
’ [ with 12-pr Armstrong gun 
12-pr. A., 8|c 
21 
1 8 
a 
10 14| 
3*0S4 
1187*5 
1197*4 
„ 
11 
1 8 
11 13 
3*083 
1181*5 
1190*6 ' 
„ 
5 
1 8 
„ 
11 9 
3*083 
1195*4 
1204*8 
Experiments to ascertain 
,, 
6 
1 8 
„ 
11 5 
3*084 
1190*8 
1200*4 
the initial velocity of 
„ 
7 
1 8 
» 
11 1 
3*083 
1205*6 
1215*6 
► the 12-pr. Armstrong 
„ 
11 
1 8 
)> 
11 13 
3*084 
1164*5 : 
1173*4 
projectile in function of 
„ 
11 
1 8 
„ 
11 5 
3*084< 
1192*9 : 
L202-5 
the weight of the shot. 
„ 
10 
1 8 
„ 
10 13 
3*084 
1209*8 : 
1220*1 
„ 
10 
1 4 
„ 
11 9 
3*084 : 
1055*3 : 
L063-1 = 
Experiments to ascertain 
„ 
10 
1 6 
„ 
11 9 
3*085 : 
1092*4 : 
L 100*7 
the initial velocity of 
,, 
10 
1 8. 
11 9 
3*084 : 
1180*9 : 
L190-2 
-the 12-pr. Armstrong 
,, 
10 
1 10 
33 
11 9 
3*084 : 
1224*8 : 
L234-6 
projectile in function of 
„ 
10 
1 12 
11 9 
3*084 : 
1262*0 : 
L272-2 
809*2 < 
870*0 
931*1 
the weight of the charge. 
99 
99 
10 
10 
10 
0 14 
1 0 
1 2 
33 
11 9 
11 9 
11 9 
3*084 
3*084 
3*084 
803*8 
863*9 
924*6 
Experiments to ascertain 
the initial velocity of 
” 
10 
10 
1 4 
1 6 
11 9 
11 9 
3*084 
3*084 : 
997*8 ] 
1050*2 1 
1005*1 
L058*0 
the 12-pr. Armstrong 
projectile in function of 
’’ 
10 
1 8 
11 9 
3*084 : 
1106*4 ] 
L114*8 
the weight of the charge. 
■" „ 
10 
1 10 
11 9 
3*084 ] 
1.178*0 1 
L1.87*3 J 
(2nd series). } 
