![]() 223 brass, FL sized CCI 400 small rifle primers 3.1gr Hodgson Titegroup (I also have trailboss and Clays available) Hornady 55gr FMJ (2267) COAL: 2. 223 loads using Hodgson Published load data. For this reason people shooting with a silencer prefer subsonic loads, even when shooting a rifle. While eagerly awaiting my Specwar 7.62 to get out of jail, I took the time to create some subsonic. As a side note, if a silencer is attached to the gun it will only suppress the muzzle-blast noise. Subsonic loads do not have this second component of noise. The noise that shooting makes has two components, the noise of the hot gases escaping the muzzle and sometimes flashing as they hit the atmosphere (muzzle blast), and in the case of supersonic loads the crack of the sonic boom as the bullet breaks the sound barrier. 223 is also the rifle cartridge of choice for military and law enforcement tactical professionals as well as civilians in over 35 states to use. Most rifle loadings are all supersonic, so subsonic loads are specially down-loaded to stay below the speed of sound. In 9mm, most loading data are supersonic. All data in this caliber is subsonic but is not normally tagged with the name subsonic. Not all "subsonic" loads are noted as such in the data, because the cartridge is not capable of producing supersonic velocity. Would this be enough to cycle the bolt on an AR-15 The reason I ask is I have an AR pistol in 223/5.56 that I keep at home for HD, and there is always the factor that 223/5.56 can penetrate walls fairly easy. This is why the 55 grain SP flat base bullets work well as subsonic round!īullet Trajectory- Distance is in Yards and drop is in inches.Subsonic loads refer to those whose velocity is less than the speed of sound. Seems in order to bring the load down subsonic, it needs to come down to about 1300 fps, which is less than 1/2 the normal 223 load. Having a high BC bullet at subsonic does not benefit the shooter at all. BC (ballistic coefficient) is for supersonic flight, and does not matter at subsonic speeds. This allows the 55 grain SP flat base to be more stable and have the potential to be more accurate at subsonic speeds than a BTHP design. Check out our 5.56 NATO rounds for your AR-15 ammo. The 55 grain SP flat base is a much shorter bullet than a similar weight 55 V-max or BTHP design. At Ammunition Depot, we provide our customers with unbeatable options for cheap 223 ammo and 5.56 ammo. In a given twist rate (like a 1:10″ or 1:9″ barrel twist) and slow subsonic speeds, a shorter, flat base bullet is more stable than a longer BTHP or VLD match bullet of the same weight. Bullet length is a major factor in how stable it is out of the muzzle. Why use a 55 grain SP (soft point) flat base, instead of a BTHP, VLD, polymer tip or match bullet? When shooting at subsonic speeds, bullet stability becomes a huge factor for the bullet to properly stabilize and for it to shoot well. ![]() If you are zero’d at 100 yards with normal full power supersonic 223 or 5.56 ammo, your point of impact (POI) with the subs will be about 6″-12″ low at 100 yards. This ammo will NOT cycle an AR-15!!! It will shoot fine out of an AR-15, but you will need to manually cycle the bolt. The 55 grain SP bullet is marginally stable in a 1:12″ twist barrel at subsonic speeds, and should not be shot in any slower twist rate. But you won't hit NATO 62,000 psi pressures anyway, or anywhere near this level, with this powder and 55s - unless you're running some really heavy and low capacity brass. But you wont hit NATO 62,000 psi pressures anyway, or anywhere near this level, with this powder and 55s - unless youre running some really heavy and low capacity brass. Yep, Wylde is largely a modified 5.56 chamber to improve precision. Yep, Wylde is largely a modified 5.56 chamber to improve precision. Load away, 223 wylde is designed for 5.56 pressures. If you have a 1:12″ twist, you will need to check bullet stability first before shooting through a suppressor. Load away, 223 wylde is designed for 5.56 pressures. This ammo will NOT cycle an AR-15!! This ammo is designed for 1:10″ twist or faster (1:9″, 1:8″. This subsonic ammo is not designed for barrels longer than 24″. This ammo is loaded to SUBSONIC speeds for barrels from 10″ to about 22″ barrels. Once-fired LC brass, Hornady 55 grain SP (soft point) 1030 fps. Our top selling 223/5.56 SUBSONIC round (priced per 100 rounds).
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