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. 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. It works, doesn’t cycle the rifle but it’s quiet. I tried 3.1 grains of Titegroup under a Nosler 69. 223: I looked on the Hogden site and found a subsonic load: 3.1 grains of Titegroup and a 55 grain bullet. Blackfork is trying to develop subsonic loads for his. Long grooves in its gilding metal jacket. 223, Ammunition, ar-15, handloading, rifles, Subsonic, suppresor. The Sub-X bullet used in Subsonic Rifle features a lead core. Good To Go 223 Subsonic ammunition is designed to operate at speeds less than the speed of sound, which avoids the bullet making a supersonic shockwave or. Subsonic Handgun utilizes tried-and-true XTP® bullets that expand reliably at subsonic velocities. The 55 grain SP flat base is a much shorter bullet than a similar weight 55 V-max or BTHP design. Hornady® Subsonic Ammunition designed for accuracy and performance below the speed of sound now comes in both rifle and handgun loads. 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.
#Subsonic 223 rounds full
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 9″-12″ low at 100 yards. It will shoot fine if you 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. If you have a 1:12″ twist, you will need to check bullet stability first before shooting through a suppressor. 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. Last edited by Stengun 08-26-14 at 08:56.Our top selling 223/5.56 SUBSONIC round (priced per 100 rounds). All you can hear is the bullet smacking the steel swinger. I cheched this myself with a MP3 recorder and mic and in person by standing a safe distance behind a barricade ( huge white oak ) from the 6" swinger. How quiet is a silenced AR-15 with subsonic ammoIn the past. 223 bullets shot from a suppressed rifle. When fired even single shot through an AR w/ suppressor these rounds do not make any noise that can be heard at that distance. Many viewers have requested a sound test of subsonic. 22LR.įor SHTF situations this load can easily kill a person or deer size game at 175yds with a head shot. Loads using the PRVI 75gr BTHP-M bullet are pretty impressive compared to a. 223's w/ Hornady 60gr HP 1,050ft/sec ( just for kicks ) that shoot flatter, are more accurate and have more energy at 175yds ( I have a target stand w/ 6" swinger at 175yds ) than the SSS.
The Aguila 60gr SSS only has a muzzle velocity of about 950ft/sec with a round nose bullet and I have loaded a few. 22LR round that has the downrange terminal ballistics of a subsonic 60gr or heavier bullet. Actually if I was going to build a suppressed big bore AR I would go with something based on the 6.8 brass and.
300BU/Whisper/etc would be nice but the OP asked about subsonic. If I wanted a suppressed AR I would go with the 300 Black Out.
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