196 Major J. G. Barnard on Elongated Projectiles, 
In the foregoing case there is no permanent departure, or d 
viation from the original direction of projection; nor would 
there be much apparent departure in the range of the modem 
rifled arms since the periods of these helical revolutions would 
probably be but a fraction of a second, while the time of flight 
is from 6 to 8 seconds. 
The matter is much more complicated when, instead of the 
reasing 
ber of 
It would, perhaps, be unprofitable—in the aber S ber § 
(so called) stability of axis which is the very object of giving" 
tion, I have eer that it is an adequate cause of — i 
— wil be admitted. Hence, while _ stage 
te to the effect, or may o it (according to ontroll- 
the ball), this peculiar effect maa HA ne rifled 
ing cause of deviation of elongated balls ged from 
"In this case the helical path would probably be so prononcé as to be easily Oe 
“apt ices Sie art “Fre a mee Oe 
sz hape of 
