45 at that distance is much less, only 236 ft/lbs. At 200 yards, the 60.5-inch bullet drop of a. 45ACP ammunition has a muzzle velocity of 863 fps and 380 ft/lbs of energy at the muzzle when fired from 1911. Notes: Penetration measured at the exit point of bullets from gel blocks 300 Blackout Ballistics Test ResultsĪs a comparison, a 230-grain round of Federal JST. Notes: Only ammo tested to have all five rounds stay in the gel Notes: Penetration measured at the exit point of bullets from gel blocks We will be measuring the muzzle velocity of each round using a ProChrono Digital PAL chronograph set up at the muzzle, and then plug that data into Strelok Pro in order to work up some ballistics charts for each round. 300 Blackout pistol with a 10.5-inch barrel and a 1 in 8 twist rate. We’ll be shooting five rounds of each through four layers of heavy cloth into Clear Ballistics gel, an industry-standard testing medium. One of the rounds uses open-tip match (OTM) bullets, and one is a conventional full metal jacket round. Two of the rounds have a polymer tip that is designed to open up and slow down the round on impact. We’ll be tasting four different kinds of subsonic. 300 Blackout round does when it hits the target, and that will play a big part in our test of. What’s missing, though, is any indication of what a subsonic. 45 ACP, which allows them to fly more accurately and retain more energy at longer distances than. However, they have a shape that is much more aerodynamically efficient than. At around 220 grains, subsonic 300 Blackout ammo weighs about as much as. As they don’t break the sound barrier when fired, they are quieter to shoot than supersonic ammunition. 300 Blackout rounds are a bit of an outlier in the world of rifle ammunition. It’s that last type of round that we’ll be testing today. What the creators of the 300 Blackout managed to do is create around that delivers enough energy to work reliably in an AR with both high-speed, supersonic rounds and heavier, slower-speed subsonic rounds. Too little gas siphoned off, and the AR doesn’t have enough power to load a new cartridge. Too much gas siphoned off (and too much energy delivered to the action results in feeding issues and low muzzle velocity. That energy is delivered to them from the gases siphoned off by each round firing. These systems are designed to work with a specific range of energy. The vast majority of AR-style guns use either a direct impingement or gas piston system to cycle the action and chamber a new round. That’s quite a technological achievement. 300 Blackout is designed to use heavier bullets in the 190-230 grain range which travel at subsonic velocities, yet still, work well in the M4/AR platform. This means that while the sound of the round firing is quieter when using a suppressor, there is still a very loud “crack” when the bullet breaks the sound barrier. 300BLK has supersonic bullet speeds when loaded with lighter bullets in the 120 to 130-grain range. However, the.300 Blackout rounds (or 300BLK for short) can serve two roles. 300 Blackout ballistics are very similar to the 7.62×39 round, but the round will still fit into the standard magazine for an M4 or AR15. 223 cartridge but with a wider neck that allows it to accept. The round is built on the tried and true. The caliber is a result of the military’s experience using the 5.56mm round in the M16.300 Blackout was specifically designed to work well with the M4/AR15 style of guns. 300 Blackout is a relatively new cartridge with a unique history.
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