Shouln't a Gauss-Rifle be silenced by default?
It is a magnetic driven bullet, without any explosion. It should even make less noise then a pneumatic weapon.
I don't have that weapon in multiplayer yet, but in singleplayer it is kinda loud.
We'll just say its the round breaking wind at Mach 3

As far as I know read through that, the amplitude of the sound made by accelrating to supersonic speed is depending on the amount of energy needed to travel a certain distance.
I don't think that an aerodynamic bullet, even when accelrating on supersonic speed will need much energy, since it just weights about 20g.
Okay..... its being accelerated out of the cannon at the current post sonic speed, if anything it would slow down once it leaves the barrel, the velocity however still justifies the sound barrier being broken, your right though , no explosion was used to propel the bullet, meaning it should be quite, at first, but the gauss is launching a projectile so fast out the muzzle it snaps sound waves instantly allowing the waves to porpagate air expansion at a berserk rate, thus the explosion heard.
What is an explosion but rapid expanding air
