Round Information.360 AutoNS Draftroom Writeup.40DDI (10x23mm)This round was developed as a requirement for a replacement to the ancient 10.5x33mm cartridge. This round has very similar killing power to the mighty 10mm Auto cartridge in a more compact and reliable bottlenecked form. While it has a shorter casing, the casing is wider, allowing for just as much powder to be packed in. The bottlenecked design also is very beneficial for feeding, as bottlenecked cartridges are superior to straight-walled cartridges in this aspect. The round boasts both flat trajectory shooting and superior knockdown power: a heavy round moving at a high velocity. This is a deadly combination that results in knockdown power vastly superior to that of the famed .45 ACP cartridge. DDI has developed several loads for this cartridge. There is a 230 grain full metal jacket (FMJ) cartridge for superior penetration of cover and all around utility. A 215 grain jacketed hollow point (JHP) round designed for maximum expansion in a target is also in service, boasting superior killing power but inferior penetration to the FMJ round. Several other loads, including a frangible load, are available as well. However, the primary round used by the military is the Armor Piercing Fragmenting Jacket cartridge.
DDI, of course, has recognized that not all targets (if not most) are unarmored. As a result, a special round was developed to deal with both armored. This 165 grain round, called the Armor Piercing Fragmenting Jacket (APFJ), is capable of both penetrating a Level IIIA Kevlar vest, and cause a grievous wound on an unarmored target. This round consists of a pointed tungsten nose and core section immersed in a blended metal jacket that flattens out upon impact with a hardened surface, or an object unable to be penetrated (such as a vest). When this happens, the tungsten core is able to continue through, piercing the armor.
With unarmored targets, the case expands as the round penetrates. This both creates a massive wound from the fragments, and causes the core to begin to tumble within the target, creating an extremely lethal and difficult to treat wound. The lighter 165 grain load boasts both lower recoil and higher velocity, allowing for superior armor penetration properties.
The .40 Caliber DDI cartridge is an inherently accurate, as well. This is also a highly streamlined cartridge with a flat trajectory, meaning that the round's flight path will remain the same for most of the projected engagement range. A shooter will spend less time figuring out how much higher they have to aim given a range and be able to fire much more quickly and accurately.
6.7 x 35mm CTA The 6.7x35mm CTA round which originally made its debut with the popular AVIR assault rifle the ADEC was designed to supplement. Use of this round allows total ammunition commonality within an infantry squad or platoon while at the same time offering the ADEC a relatively low impulse but high powered cartridge. In its standard load, the 6.7x35mm CTA cartridge puts a 110 grain projectile downrange at velocities exceeding 2,700 feet per second out of an 18" barrel, hitting its target with over 1,780 foot pounds of energy. Accuracy and lethality performance at range is also excellent thanks to the relatively heavy round. A key advantage of the 6.7x35mm round is its unusual design: it is a cased telescoping round, meaning that the actual projectile is set within the case, with the powder all around it. This creates a much shorter, more volume efficient round, one that is ideal for usage with the ADEC light machine gun in that it does not require a terribly long receiver in order for the constant recoil action to function properly in addition to allowing a 300-round combat box to be easily utilized alongside the weapon, granting the infantry squad an excellent tool for sustained fire. In addition, the casing is constructed of composite material, creating a round that is in effect 40% lighter than a round of comparable power with a brass case. The current primary export load for the 6.7x35mm CTA cartridge is the APHP (armor piercing hollow point). This particular round features a steel core surrounded by a lead inner jacket and copper outer jacket, the tip of the projectile being designed on the basis of a hollow point with the tip of the steel core protruding outwards. When impacting a target, such as a person, the jacket expands outwards, while the steel core continues through into the target, hopefully yawing and causing even more damage. This allows for both a large entry wound and the possibility of the steel core causing even more internal damage to the target. When used against armored targets, the jackets would essentially flatten against the target while the narrower steel core would be able to follow through, hopefully penetrating the armor. The result is a round that is extremely lethal against unarmored targets while still being capable of penetrating armor. This is only one of many loads for the versatile 6.7x35mm CTA cartridge, others including jacketed hollow point (JHP), full metal jacket (FMJ), frangible (FG), armor piercing (AP), and a variety of tracer rounds. There are not currently any plans for any versions of the ADEC in other calibers, although it should be noted that the design, unlike the AVIR, is not reliant on the use of a CTA cartridge, and as a result Armacorp has admitted that it should be possible to offer the ADEC in other calibers should the need arise.
6.8 x 51mm The 6.8x51mm round was created in response to the requirement of the Imperial Layartebian Military to replace the 5.56x45mm rounds in service. The result was a combination of the 6.8 Remington SPC and the 7.62x51mm round. By utilizing the bullets of the 6.8 Remington SPC with the case of the 7.62x51mm, the result was a highly powerful and very capable round. With 59.15% more capacity in the 51mm case versus the 43mm of the Remington SPC, the same rounds can be propelled at a much higher velocity for more energy and a flatter trajectory. Because the full round size is the same in length as the 7.62x51mm round, any weapon that can utilized this round can also utilize the 6.8x51mm with a minor change of the barrel to accommodate the smaller round. The round is set to just 52,000 PSI but match ammunition is pressured out to 58,000 PSI. There are four bullet weights available. The 90-grain is the lightest and also the fastest. It can be used with any barrel length. A 100-grain and a 115-grain round make up harder hitting capacities and they too can be used from any barrel length. Match ammunition for sniper and machine gun duties is 130-grain and pressured up to 58,000 PSI. It cannot be used in barrels under 16 inches in length. The 6.8x51mm round has more energy than the 5.45x39mm, 5.56x45mm, and 7.62x39mm rounds used in the AK and AR-15 type weapons.

7.82 x 80mmThe 7.82x80mm round was developed from the .300RUM round. The case was extended from 72.39mm to 80mm, increasing the overall length to 99mm and giving it 10.5% more capacity, for 121.771 grains of water. The case utilizes the same 200-grain bullet as the .300RUM but propels it at a much higher velocity. Out of a 24 inch barrel, the muzzle velocity is 1,085 meters per second versus just 951 meters per second for the regular .300RUM round, offering over 1,000 ft·lb more energy at the same 65,000 PSI loading, 5,620 ft-lb in total.
15.5 x 115mm The 15.5x115mm round is a heavy machine gun and sniper rifle round, modeled after the 14.5x114mm Soviet round. It's aim is to offer a significantly larger amount of power than the 12.7x99mm rounds used throughout the world's armies and even the 14.5x114mm rounds. It is a very large and heavy round that is optimized for high speed and high penetration. The total round is 157mm in length with the 115mm case supporting up to 656.34 grains of water. The standard bullet weight is 1,050 grains. With a loading of 60,000 PSI (maximum supported up to 65,000 PSI), this round has a significant amount of energy. Out of the 59.05 inch barrel of the M31, it has a muzzle velocity of 1,202 meters per second and a muzzle energy of 36,268 ft·lbs. This is over 50% more than the 14.5x114mm and over 240% more than the 12.7x99mm. Other available bullets include AP-I, SLAP, and match ammunition, which weighs 1,150 grains and is used in the M116 Black Mamba. This round has a muzzle velocity of 1,067 meters per second out of a 39.5 inch barrel and 31,286 ft·lbs of energy, which is still more than the 14.5x114mm and 12.7x99mm rounds.