When a projectile breaks the sound barrier and goes above 1100, it is supersonic. There may not be enough gas to reliably cycle the action due to the loading.Īpparently, the moral of the story is that a heavier bullet moving at subsonic speed is not as effective at long range. In others, the speed may affect the cycling of a semiautomatic firearm. In many cases, the subsonic speed will prevent reliable expansion with hollow point or expanding point ammunition. Likewise, these types of shooting situations typically take place within ranges of 100 yards or less. This corresponds with such rounds used in close quarters combat, self-defense, and home-defense. For most hunting scenarios with subsonic loads, this is a moot point as those types of animals such as bear, deer and hogs are hunted at close range. The downside of most subsonic ammunition is a limited effective range while hunting. This may be negligible or unnoticed on certain rounds, but it fully registers with the shooter when shooting a rifle round. A heavier bullet moving slower will not have the same felt recoil as a lighter bullet moving faster.
SUBSONIC 9MM AMMUNITION BEST CHOICE CRACK
The noise of the fired round and the muzzle blast is present without that high powered supersonic crack familiar to high-powered rifle shooters.Ī secondary benefit to subsonic rounds is reduced felt recoil. This does not mean that the round is hearing safe without a suppressor. This is because there is no sonic boom accompanying the fired subsonic load. Subsonic ammo has one primary advantage it is particularly quiet when fired through a suppressor. At Grizzly Cartridge, we offer 45-70 +P and 45 Colt +P ammunition options, supersonic versions of the otherwise naturally subsonic ammo. Depending on the bullet used and of course the powder selection, these rounds may be loaded to subsonic or supersonic levels. A few rounds can have a dual-purpose regarding loading parameters. Typically, these are cartridges that use a heavy and dense bullet like the 45-70 Government or 45 Colt. A subsonic round’s discharge and muzzle blast can damage your hearing, leading to hearing loss if ear protection is not used. Despite the lower muzzle velocity, this does not eliminate the need for ear protection.
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