![]() Get rid of any muzzle device and make the actual barrel that much longer. Find a barrel that is longer than 16" to reduce muzzle pressure even further right up to the point that it affects balance and handling. You can crank the dual mic speaker volume way up to better hear people sneaking about, without busting an eardrum, should there be any shooting: 2. Keep these muffs by your home defense gun. So, consider one or two of these options to make it hearing safe/r:ġ. It will be a quieter, deeper sound but there will "more of it" due to the larger bore. Template requires legal size paper to print. Now, just because the muzzle pressure is lower does not mean that the total sound is going to be anything less than eardrum splitting indoors. The main advantages of the AK-47 is its simple design, fairly compact size, inexpensive to manufacture, and easy to clean and maintain. That huge case was designed for black powder and is super "low compression" with smokeless. Case in point, is to look at the peak pressure of an equivalent. Im in the county so shooting is legal, but our HOA has rules against it. The lots are pretty big, so if I am careful about my backstop, I can safely shoot critters. I live out in the boonies but in a neighborhood. Subsonic ammunition usually uses heavier bullets to retain as much energy as possible at the lower velocities. The rounds I have are CCI mini-mag HP (36 grain at 1260 fps) or a CCI subsonic HP (40 grain at 1050 fps). This avoids the supersonic shockwave or 'crack' of a supersonic bullet, which, particularly for suppressed firearms, influences the loudness of the shot. Yes, it is not designed for higher pressure, but that is how the low operating pressure is achieved. Subsonic ammunition is ammunition designed to operate at velocities below the speed of sound, which at standard conditions is 343 m/s or Mach 1. 45 ACP has a lower peak pressure than the 9 mm Parabellum primarily because the case volume behind the seated bullet is larger. Now, after 5 years of heavy street use, the problems with the 9mm subsonic are apparent. 45 will have the lower muzzle pressure, despite it using about the same mass of the same propellant as a 9 mm. Thousands of police agencies adopted the 9mm subsonic as a duty load based on lab tests performed by a single agency, the same agency that claimed to have identified the stopping-power problem. So, if you limit the barrel to 16", then the. ![]() StelTH 9mm Luger 165 grain Total Metal Jacket Brass Cased Centerfire Pistol Ammo, 50 Rounds, 9165TMC-STL. 45 barrel has 1.6 times the internal volume of a 9 mm barrel of the same length. Stelth Ammunition 9mm Luger 165 Grain Total Metal Jacket SKU - 323735. The greater the "expansion ratio" of the barrel system, the lower the muzzle pressure. What matters is muzzle pressure, and quantity of gas (propellant weight). ![]() Actually from a RL point of view, not sure about the older version, but modern suppressor doesnt really affect them, infact in most cases they increase it very slightly. But using subsonic rounds without a suppressor defeats the purpose of the subsonic rounds, but as we have established you are kind of doing that anyway.For sound, peak chamber pressure matters not. The lowered velocity of those rounds (some are already subsonic, so they wouldnt need to change) should result in lower penetration/damage from a RL point of view. If you do decide to put heavy subsonic rounds in a submachine gun it will need a muzzle booster, if you are using a suppressor, but not if you don't have one. You are better off with two guns that do each job well, one for silent one for power, than one gun that does neither. Worse automatic fire very quickly deteriorates a suppressor so the gun gets louder as you use it. Mike Stone Author has 6.7K answers and 14. You can make auto cycling guns that can shoot subsonic rounds, it works well in semiautomatic rifles, but you can't combine it with high power rounds. So yes, you can make subsonic rounds, or even buy them from the store. You end up with very loud low power rounds. ![]() you can have high power AP round or very silent rounds if you try to do both it just ends doing neither well. ![]() Your choices are counter productive in multiple ways.Ĭhoosing a heavier round with subsonic is counter productive since you need a larger charge and thus more noise to move the heavier round. ![]()
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