( 257 ) 
Bore. 
Length 
of 
Case. 
Powder 
in 
Grains. 
Weight 
of Bullet 
Grains. 
Pressure in 
tons per 
sq. in. 
Muzzle 
velocity 
in ft. 
secs. 
Pressures 
after expo¬ 
sure to 120° 
ffahr. for 
twelve hours. 
Pressure 
after the 
bullet had 
been pushed 
in } in. 
•577 
3 
164 Blk. 
570 Lead. 
10.37 
1723 
2f 
80 Cordite 
520 L. 
7-73 
1755 
6-21 
8-31 
M 
2f 
76 C. 
560 Nickel. 
6-99 
1667 
5-85 
7-89 
o 
o 
;K3 
• 
3£ 
135 B. 
440 L. 
10-51 
1748 
*9 • ••• 
3 
67 C. 
340 L. 
830 
1965 
8-26 
908 
99 
3 
61 C. 
480 N. 
8*43 
1759 
8-83 
9-47 
*450 
3£ 
110 B. 
325 L. 
10-02 
1763 
3i 
59 C. 
270 L. 
8-64 
2043 
8-37 
9*34 
99 
3i 
56 C. 
365 N, 
9-61 
1882 
9-32 
9-91 
•400 
2f 
82 B. 
275 L. 
10-81 
1671 
21 
38 C. 
230 L. 
4-73 
1616 
5-75 
5-13 
99 
2f 
42 C. 
400 N. 
11-44 
1682 
1318 
14 96 
*400 
31 
96 B. 
270 L. 
10-14 
1649 
• • • 
31 
49 C. 
370 L. 
8-83 
1644 
9-73 
9'69 
*i 
3* 
53 C. 
400 N. 
14-50 
1952 
16*12 
15-41 
