368 
PRINCIPLES OF CUNNERY. 
(2) With left-handed rotation, under similar conditions, the drift is 
to the left . 
(3) With flat-headed projectiles, the drift with right-handed rota¬ 
tion is generally to the left. 
For the method of determining the drift for any particular piece, 
and the allowance made to compensate for it in the sighting, vide 
“ Treatise on Construction and Manufacture of Ordnance/'’ 1877, 
pp. 56, 57. 
When very low charges are used in high-angle firing, it is found 
that the projectile strikes the ground base first; with a little more 
charge, the projectile falls on its side; and with a still higher charge, 
the projectile strikes the ground nearly point first. 
(To he continued.') 
