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. 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. Specific reductions depend on the ammunition and suppressor. Main article: Suppressor § Subsonic ammunition and reduced sonic signatureĬombined with firearm sound suppressors, subsonic ammunition may significantly reduce sound levels compared to normal ammunition. Subsonic bullets are traveling slower than sound supersonic bullets are travelling faster than sound. These are designed from the start as dedicated subsonic projectile systems. At 50+ yds I prefer the 1050fps rounds better too. Due to high call volume, call agents cannot check the status of. 2006 cadillac dts ground locations best vacations for teens. Accuracy at 25-35yds is quite good and fits the purpose of the round. USA - ()- Kentucky Gun Co has a make-your-own offer on 10 boxes or 1000 rounds of CCI 22LR Subsonic HP 40Gr 1050FPS Ammo with flat rate shipping all for 211.89. A compromise between velocity and lowest noise. I want to get a cz in 22' barrel to shoot these. 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. The quiets are certainly louder out our 16.5' barrels than longer barrels. For example, the traditional American military standard. Some ammunition types were inherently designed with heavier, slower standard bullet weights and velocities. 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). Standard calibers Subsonic versions of standard rounds 1.1 Subsonic versions of standard rounds.Its soft report allows the hunter to pick off one rutting squirrel after another without alarming nearby tree rats. Subsonic rounds have measured muzzle velocities slower than the speed of sound. It cycled real well when I bought the rifle in 1973, and it still does today.”įor squirrels, Scoggin uses the CCI Subsonic 40-grain hollow point. Sub-sonic and super-sonic are velocities that reference the speed of sound in air. “I tried several different brands in my Ruger 10/22 and found that the CCI ammo shot the best. “Among them are a 40-grain hollow point that shoots at 1,050 feet per second, the 45-grain Suppressor hollow point at 970 fps and a 710-fps segmented bullet that fragments into three pieces on impact.” Several companies make subsonics, but Scoggin prefers CCI. 22, there’s a loud ‘kapow’ or crack because the bullet is breaking the sound barrier. “At my shooting range, some of the older guys shot subsonics, and I noticed a big difference in the sound of the rifle’s report. “I started shooting subsonics many years ago,” he said. Clay Scoggin, an avid small-game hunter and shooting enthusiast, always uses subsonic.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |