Ensuring military security remains an important task for any state. Its solution in modern conditions, when the combat capability of the armed forces increasingly depends on the scientific and technical level and quality of weapons, requires continuous improvement of military equipment, which leads to the need to dramatically increase the level of training in research, development and operation of weapons. Nowadays, when hostilities continue in the east of the country, military specialists and all enterprises of Ukroboronprom are faced with the problem of improving the efficiency of RAW samples that are being developed, modernized or modified. In this regard, there is a need to increase, while reducing financial costs, to develop the effectiveness of the use of existing high-explosive fragmentation munitions, which will implement a method of affective defeat of enemy targets. Insufficient for modern conditions, the level of impact of high-explosive fragmentation (RP) shells, forces research to improve their efficiency. One of the ways to increase the efficiency of fragmentation of OF shells is to ensure the optimal fragmentation spectrum of multi-purpose in the process of explosive destruction of the hull (VRK). The analysis of the directions of the decision of this problem reveals the most expedient directions, such as, change of the scheme of loading of the case, search of new constructive schemes of OF shells, improvement of characteristics of a fragmentation field of defeat at the expense of change of chemical composition of steels and their mechanical properties. affection. In modern general combat, especially with the use of only conventional weapons, artillery fire in combination with air strikes is one of the main means of destroying the enemy. This is due to the fact that the artillery has a powerful and accurate fire, long range, the ability to maneuver widely and quickly concentrate fire on the most important targets [1]. In the tactics of all-out combat, an important role in the system of fire on the enemy during large-scale and local combat is assigned to the artillery complex. Military experts note that in future conflicts, the role of artillery complexes will not decrease, but rather only increase. Analysis of military conflicts in recent years shows that the defeat of the vast majority of targets of various classes of defense on the battlefield (manpower, armored vehicles, field-type fortifications) is achieved by firing shells of combined action – high-explosive (OP). They are ammunition (BP) for multi-purpose purposes and form the basis of the combat set of artillery complexes of field artillery, as well as part of the combat sets of tank and anti-tank guns. Key words: high-explosive fragmentation projectile, ammunition, construction, layout, efficiency.