<prompt> Presence of spiral grooves in the barrel of weapon is referred to as:RiflingIncendiaryCockingNone of the above  <response>: Ans. A. RiflingShotgunRifled gunCHOKING: The terminal few cms 7-10 is constricted in shot guns. Reduces the pelletsdispersionQ Increases the explosive forces of the pellets. Increases the velocity of the pellets.RIFLING: Interior of bore has spiral grooves which run parallel to each other, but twisted spirally from breech to muzzle end. These grooves are called rifling Imparts Spinning motion to the bulletQ Greater power of penetration. Straight trajectory Increases accuracy rangeFully choked shotgun - Least dispersion of pelletsUnchoked shotgun - Maximum dispersionQ of pellets. Paradox gun: A smooth bore gun with small terminal part rifled.Bullets that impart great tissue destruction:Soft nosed bullet that flatten on impactDum Dum bulletBullets that fragment frangible bulletBullets that mushroom on impact 