4 O. N. Rood on Elongated Projectiles. 23 
as 4 and 5. 
perhaps hardly necessary to dwell farther on this matter 
of length, for while all the foregoing tends to explain why it has 
been found necessary in Europe to use low initial velocities with 
these highly elongated projectiles, it at the same time gives us 
little reason to ex pect that they will ever be able to compete with 
their shorter and more manageable rivals. 
Below are the dimensions and weights of a number of balls 
belonging to first-class American rifles, each of which has been 
distinguished for its accurate practice : 
Diameter of the Base.| Length. Length in Diamet Weight in Grains. 
0°36 in 0°62 in. a°:72 Se aw 
0-35 0°62 “ 1:77 105 
0-46 “ 0:82 “ 1:78 243°6 
0-47 “ 0-87 * 1:83 249 
0-45 “ 0-86 * 191 265'8 
O44 “ 0:85 “ 1:93 225 
