In fact, SOF Operators have reported shooting terrorists in one room of a house, and not having woken up bad guys sleeping in adjacent rooms. Because of the lower pressures at the muzzle, and the lack of a supersonic report, shooting "subs" is completely hearing safe and comfortable for the operator and those around them. 300 Blackout is extremely quiet, and competes with the famous MP5-SD in terms of stealthiness. The additional bullet weight keeps the rounds from breaking the sound barrier, and gives them as much energy as possible.Ģ20gr. Subsonic bullets generally boast a lighter recoil than their speedy relatives, and have an added weight coming to around 180-220 grains in a standard. If you're looking for "Hollywood Quiet", these are the loads you want to be shooting. 300 blackout rifle, even with a suppressor, still makes for a very compact package. Suppressing a supersonic round does a great job of protecting your hearing, but you'll never get the Hollywood effect. So while someone may not be able to pinpoint where they are being shot at from, they're still going to be very aware that they ARE being shot at. However, suppressors can't get rid of the sonic boom left in a supersonic bullets wake. A can on the end of your rifle is going to cut down significantly on the overpressure at the shooters ear, and can bring the muzzle blast down to more manageable levels. Just because it's not ideal, doesn't mean it can't be suppressed. Even the SOF guys will still do 99% of their gunfighting with supersonic rounds. This is the ammunition you want to train with, hunt with, and be the most familiar with. For the vast majority of applications, supersonic ammunition is the most practical choice, and it has the added benefit of being cheaper as well. Supersonic ammunition will provide more range, energy delivered on target, and less drop or wind-drift at range. Speed equals energy, so (typically), the faster a bullet can travel, the better. 22lr breaks the sound barrier, and gives a small sonic crack. Supersonic is your traditional rifle round. If you want a combat rifle with a hard-hitting round. This can actually vary a fair bit depending on altitude, temperature, and humidity, but in general, 1100fps is the determining number used in the firearms industry to differentiate the two. The speed of sound (in reference to how it travels through air, like a bullet) is approximately 1,100 feet-per-second (fps) at sea level. The supersonic and subsonic bullets draw their names from how they each respectively relate to the sound barrier. 300 AAC Blackout name), our nations Special Operations Forces wanted a weapon system that could switch between sub-sonic and super-sonic rounds effectively and quickly, from a compact package, while not having to move away from the M4 based platforms they were already familiar with. Originally born of a US SOCOM contract with Advanced Armament Corporation (hence the. 300blk round has skyrocketed in popularity the past decade. You can follow any responses to this entry through the RSS 2.0 feed.īoth comments and pings are currently closed.The. On Sunday, October 1st, 2017 at 20:00 and is filed under Ammo, Press Release. Discreet Ballistics offers a more economical 190gr target load (pictured below) that is ballistically matched to the 188gr expanding load.įor more information on Discreet Ballistics visit or on Instagram The Discreet Ballistics Selous Machined Expander™ is loaded with new Lapua® 300BLK brass and the finest commercially available powder and primers. As part of the development cycle extensive gel testing was performed and the appropriate design modifications were made to maximize terminal performance.īallistics gel test results firing a Selous Machined Expander™ from a Honey Badger 1:5 twist 6.75” barrel at 950fps The Selous Machined Expander™ projectile was designed using state-of-the-art ballistics modeling software to maximize stability at subsonic velocities. There is currently no other expanding subsonic projectile option with proficiency in all three of these categories. Before initiating the development process for the Selous Machined Expander™ three areas were identified as crucial factors for a successful subsonic expanding projectile: weight retention, accuracy, and expansion. The Discreet Ballistics 300 AAC Blackout 188gr Selous Subsonic Hunting/Self Defense load is designed to be the most effective expanding subsonic 300BLK cartridge available. Discreet Ballistics is pleased to announce its 300 AAC Blackout Selous Subsonic Expander is available for preorder (late fall 2017 delivery).īullet: Selous Machined Expander™ 188gr expanding solid copper projectile
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