CHOKE-BORES. 



309 



striction is reached, and e, f, g, li, and i, the same 

 after meeting it ; J and j 

 the Avad in the different 

 parts of the barrel. The 

 arrows in both figures de- 

 note the directions of rota- 

 tion ; g, being resisted on all 

 sides eqnally, docs not rotate. 

 As will be seen by Fig. 2, 

 the fact of the pellets of 

 each circle being in close 

 side contact interferes bnt 

 slightly Avith their rotary 

 motion, as the points of 

 touch Tire in line with the 

 axes of rotation. 



In their course through the air after their exit from 

 the muzzle, and the deflec- 

 tion of the wad, for the 

 first few yards the flight of 

 certain pellets has its influ- 

 ence on that of others in '^ 

 this manner : being then 

 close together, the air 

 through which they pass 

 tends, as it were, to wedge 

 them apart, being, on account of their displacement, 



Frcx. 1. 



Fig. 2. 



