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223 caliber bolt-action rifle firing low-velocity (subsonic) ammunition using a GEMTECH G5-5.56 suppressor.Ĭompared to the high-velocity (supersonic) unsuppressed condition, the combination of subsonic low-velocity ammunition and a firearm suppressor provided a reductions of 45, 38, 40, and 48 dB, peak sound pressure level at the muzzle, left, right ears and behind the shooter, respectively. Atomic Ammunition Subsonic 77 gr Hollow Point Boat Tail. The peak sound pressure levels of a Remington 700. 223 caliber bolt-action rifle firing high-velocity (supersonic) ammunition using a GEMTECH G5-5.56 suppressor. Load your firearm with the Buffalo Bore Subsonic Heavy Standard Pressure 9mm 147-Grain Centerfire Handgun Ammunition, which features jacketed hollow-point. This is Fiocchi 9APDHP 9mm Luger 147gr Jacketed Hollow Point Ammo.
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Specific reductions depend on the ammunition and suppressor. Fiocchi 9 mm 147 Grain Subsonic Jacketed Hollow Point FIO9APDHP Ammo (Box of 50 Round. Main article: Suppressor § Subsonic ammunition and reduced sonic signatureĬombined with firearm sound suppressors, subsonic ammunition may significantly reduce sound levels compared to normal ammunition. These are designed from the start as dedicated subsonic projectile systems. 45 ACP ammunition load, of a 230 grain bullet at 850 feet per second, is naturally subsonic.Īlternatively, specialized firearms and ammunition may be used to optimize total subsonic ammunition effectiveness. For example, the traditional American military standard. Hollow point expansion in 9mm subsonic So I just did a bit of testing with my integral 9mm AR-15 into 12' of sand with remington 115 gr JHPs from walmart, speer gold dot 124gr, and some Berrys bullets 124gr reloads. Most ammo tends to be a little slower than the specified velocity. The listed speed of most 124 grain 9mm ammo is about 1150 feet per second. The speed of sound is about 1125 feet per second depending on elevation.
#9mm subsonic hollow point full
This new subsonic 9MM Parabellum/Luger ammo was designed to fill the need for full power suppressible ammo. It is interesting, the average velocity of 124 grain jacketed hollow point ammo is just at or slightly over the speed of sound. Jacketed Hollow Point 1000 fps 20 Round Box. Some ammunition types were inherently designed with heavier, slower standard bullet weights and velocities. SUBSONIC HEAVY 9MM STANDARD PRESSURE 147 gr. Subsonic ammunition with normal bullet weights often fails to properly function in such firearms. Subsonic loads for 9mm commonly use 9.5 grams (147 gr) bullets at velocities of 300 metres per second (980 ft/s).įor these ammunition loads, balancing bullet weight and velocity are required to ensure that the ammunition will still reliably cycle semi-automatic firearms. In this instance, heavier bullets are loaded in standard ammunition, which reduces muzzle velocity below the speed of sound.Īs an example, the very common 9×19mm Parabellum standard military round is a 7.5 grams (116 gr) bullet at velocities typically around 360 metres per second (1,200 ft/s). MagTech Sport Shooting 9mm Luger Subsonic JHP-Jacketed Hollow Point 147 Grain 50 Rounds. Standard calibers Subsonic versions of standard rounds 1.1 Subsonic versions of standard rounds.