74 
MINUTES OE PROCEEDINGS OF 
Table YE. 
SHEWING THE MEAN INITIAL VELOCITIES OF VARIOUS GUNS FIRED WITH 
DIFFERENT CHARGES. DETERMINED WITH NAVEZ’S APPARATUS. 
e or2 
Projectile. 
'3 
O 
g 
r=) 03 
<6 
& 
fj 
£ 
>■ 
Nature of Gun. 
*3 
o 
% 
r =1 
O 
Nature. 
Mean 
weight 
Mean 
diameter 
'3 
M 
Remarks. 
lbs. 
lbs. 
in. 
ft. 
10-in. gun, 87 cwt. 
10-00 
10-9 
12-00 
hoi. shot. 
88-31 
9-84 
1292 
68-pr., 95 cwt. 
8-12 
14-0 
16-00 
shot 
66-25 
7-91 
1579 
8-in. gun, 65 cwt. 
8-05 
13-0 
10-00 
com. shell 
46-00 
7-85 
1487 
32-pr., 58 cwt. 
6-37 
16-8 
10-00 
shot 
31-37 
6-17 
1690 
24-pr., 50 cwt. 
5-82 
18-0 
8-00 
)S 
23*50 
5-60 
1720 
18-pr., 42 cwt. 
5-29 
19-2 
6-00 
)} 
17-69 
5-09 
1691 
12-pr., 18 cwt. 
4-62 
16-1 
4-00 
12-66 
4-52 
1770 
9-pr., 13 cwt. 
4-20 
16-1 
2-50 
9-37 
4-10 
1614 
elongated 
r 
1-75 
shot 
10-02 
2-95 
1464 
Whitworthl2-pr. 
f 3-00 
t 2-97 
1-75 
}) 
7-86 
2-95 
1654 
9 cwt. breech- > 
J 36 - 0 
2-00 
6-21 
2-95 
1905 
loading rifle gun ) 
* l 
1-25 
spherical 
rifled 
elongated 
shell 
3-42 
2-95 
2210 
Britten, 32-pr. ... 
6-37 
16-8 
5-00 
50-36 
6-24 
1209 
* 
I The compe- 
Jeffrey, 32-pr. ... 
6-37 
16-8 
5-50 
48-06 
6-26 
1263 
1 
[ titive rifle 
Haddan, 32-pr. ... 
6-37 
16-8 
7-00 
54-20 
6-19 
1277 
* cast-iron 
Lancaster, 32.pr. 
C 6-95 
1 6-35 
| 16-2 
6-00 
” 
51-00 
f 6-881 
( 6-32 j 
1246 
1 
| 
1 guns. 
f Shewing the 
12-pr. Armstrong 
do 
do 
3-00 
99 
24-5 
1-50 
99 
99 
seg. shell 
11-69 
99 
3-074 
3-010 
3-010 
1248 
1210* 
1172 
effect of re- 
\ during the 
; lead on the 
Armstrong 
[^projectile. 
This last Table has been added since this paper was read at the Boyal 
Artillery Institution. 
It has lately been stated publiclyt that it was impossible to obtain a high 
velocity from a rifle gun when fired with the same relative charge as a smooth¬ 
bore; and that the friction, consequent upon the use of lead coating for 
Armstrong projectiles, was so great that no high velocity could be obtained 
by that arm. This is totally disproved by Tables II. and YI., and all such 
statements with regard to rifled ordnance are purely fallacious, and in no way 
borne out by any experimental facts. 
* A band of lead 0-25 in. broad of tbe original diameter, viz. 3-074, left on the base, 
t Journal United Service Institution, June, 1862. 
