The Right Shot Size and the Squared Load. By Randy Wakeman. A look at the exterior ballistics of shot tells the tale: it is better to increase shot size than velocity for downrange wing shooting performance. Lyman's shows the drastic difference. For example, #/2 shot launched at a muzzle velocity of fps has only.9 ft. A shotgun shell is a self-contained cartridge typically loaded with multiple metallic "shot", which are small, generally spherical projectiles. The shells consist of a case mounted on a brass base holding a primer. The shot is typically contained in a small container inside the shell casing. Shot has traditionally been made of. RWS ammunition for hunters and sport shooters: centerfire rifle cartridges, Rottweil shotshells, air gun bullets and rimfire cartridges — Professional ammunition for hunting and sport in many calibres and bullet types.