;io 



CHOKE-BORES. 



mo7'e dense between the several pellets than outside 

 the charge. This force is exerted but a very short 

 time, however, and the further flight of each pellet 

 is independent of its fellows. 



Let us now suppose the circle A, B, C, D to rep- 

 resent one of the outer pellets of a charge of shot 

 moving in line of flight E, F, and having a motion of 

 rotation in the direction of the curved arrow. To 



