The invention relates to multi-bullet ammunition rounds for
small arms, comprising a bottlenecked case having a primer, a
powder charge, and at least two bullets which are arranged one behind the other in the case. The bullets comprise a head portion, a bearing portion, and a base having a recess. The foremost bullet is anchored in the neck of the case, and the head portion of each subsequent bullet is introduced into the recess in the base of the preceding bullet such that the
mating surfaces of the bullets are brought into contact. The subsequent bullets are installed in the case such as to be capable of movement limited by the contact of the base of the rearmost bullet with the bottom of the case, and a portion of the
powder charge is located in the recess of the base of the rearmost bullet. Between the surface of the head portion of a subsequent bullet and the surface of the base of the preceding bullet, a compartment is formed which is designed to accumulate
powder gas upon acceleration of the bullets in the
barrel of a small arm when it is fired. The invention provides increased efficiency when shooting at small moving targets in the air as a result of the increased quantity of bullets in the round, and allows for shooting from air into water at
underwater targets when supercavitating bullets are used.