![]() ![]() The sudden change in temperature and pressure is what creates the ‘gun blast’ we are all familiar with. The loud sound when firing a gun comes from 2 sources: First is from the pressurized gases created in the chamber and escaping through the barrel. Obviously, subsonic ammunition is ideal for use in a firearm equipped with a suppressor. Factory loaded subsonic ammo, like Freedom Munition’s HUSH line, has been formulated with the appropriate bullet weight and load to achieve consistent, subsonic results. However, by using a heavier bullet – such as a 147gr or 165gr – and changing the load, the 9mm round can successfully be made subsonic. 9mm, for example, is generally considered supersonic as most 9mm ammo has a muzzle velocity over 1100 FPS. Subsonic ammunition is loaded specifically for the projectile to maintain a speed that does not break the sound barrier and create a sonic crack. Anything above that risks entering the trans sonic barrier. However, the generally accepted answer for the speed of sound at sea level, is about 1100 feet per second. The speed of sound is a variable thing that is affected by temperature, humidity, and barometric pressure. Supersonic means the projectile breaks the sound barrier, which produces a mini sonic boom, or a sonic crack. In very simple terms, subsonic means the bullet is moving slower than the speed of sound. Supersonic – what’s the difference? Which is better? Which should I use? Common questions with fairly simple answers that we will cover in this article. Necessary stocks of ammunition are established during peacetime, and some of them are used for troop combat training.Subsonic vs. Under current conditions, where the troops are highly saturated with automatic weapons that possess high rates of fire and where various new types of weapons are available, the amount of ammunition necessary to support a battle (or operation) rises sharply. In the Great Patriotic War, during 1943–44 alone, USSR industry manufactured 359 million shells, mines, and aerial bombs. During World War I (1914–18) about 65.3 million artillery rounds were manufactured at Russian plants and imported from abroad. For example, in the Russo-Japanese War of 1904–05, Russia expended 900,000 artillery rounds. Waging a battle involves large expenditures of ammunition. Particular elements of the ammunition are an exception after repair, cartridge cases and the housings of primer cups can be used again. There are types of ammunition (for example, mines) that are set up on the objective to be destroyed and explode after a predetermined time interval or upon a signal given by radio or wire. Some ammunition is set up on the ground or in the water (mines), and it acts (explodes) on contact with the target or when the target is in the ammunition’s zone of operations. Also included in ammunition are particular elements of the ammunition itself, such as fuses, powder charges, explosive charges, percussion caps and primer cups (fuses), blasting caps and detonators, igniters, cartridge cases, powder bags, and others.Īmmunition is delivered to the target by being projected from firearms (shells, mortar shells, rifle grenades, bullets), by means of various engines (rocket shell, torpedo), by being dropped on the target from an altitude (aerial bombs), or by being thrown by hand (the hand grenade). The action of most ammunition is based on the utilization of the energy given off by explosive substances, which causes the destruction (demolition, annihilation) of various targets.Īmong the types of ammunition are nuclear ammunition artillery rounds and infantry mortar rounds rocket shells rounds with rocket artillery projectiles, mines, and shells antitank guided missiles aerial bombs rifle cartridges hand and rifle grenades explosive devices charges of explosives mines naval mines torpedoes illumination and signal rounds and others. ![]() Articles of weaponry designed to hit enemy manpower, destroy his combat materiel, demolish fortifications and structures, and carry out other missions (illuminate the terrain, drop agitational literature). ![]()
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