Therefore, the best way to make a subsonic bullet effective at neutralizing a target is through precise placement and deep penetration. This has the potential to seriously limit stopping power. Unless specifically designed to expand at subsonic velocities, bullets travelling at subsonic speeds generally don’t have enough energy to expand well, and this limits their ability to transfer energy to the target. Low velocity also seriously limits bullet energy because bullet energy increases as the square of the velocity. That’s because subsonic ammo’s low velocity gives it a rainbow-like trajectory and makes it very susceptible to wind drift. To start with, the maximum effective range of subsonic loads is usually limited to about 100 yds. Very little in life comes without a cost, and subsonic ammo does have its limitations.
But once magnum and +P handgun cartridges became popular and high-velocity supersonic rifle ammo became the norm for hunting, personal defense, law enforcement and military applications, sonic booms were the norm when shooting a broad number of different calibers. 22’s, ELEY carries ammo for all shooting disciplines – from their force line firing at speeds of 1250 fps or their contact line going subsonic at 1090 fps.īefore the turn of the 20th Century most handgun ammunition was subsonic and quite a few rifle loads lost enough velocity that they became subsonic by the time their bullets went 50 yards. if you want to ensure your shots stay subsonic. Given the effects of atmospheric conditions on the speed of sound, it would be best to use ammo that keeps muzzle velocity down to around 1,000-1100 fps. The speed of sound becomes lower as one goes up in altitude and it increases as the temperature rises. at sea level (depending on conditions), the two pressure waves combine into a single shock wave that produces a booming sound when the bullet passes by.
When the bullet reaches the speed of sound which is around 1125 fps. The faster the bullet flies the closer these pressure waves become. When a bullet travels through the air it creates two pressure waves – one at the tip of the projectile and one at the base. The only practical way to eliminate the boom is to use subsonic ammo. Suppressors reduce the sound of shot by an average of about 30 dB(decibels), but they do nothing to reduce the sonic boom that a bullet makes as it flies through the air.
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