There are too many variables to give you a single answer. A .44 magnum will be MUCH louder than a .22 short. Air temperature also affects sound transmission- hotter is further, since the air is less dense. altitude will also have an affect, wind DIRECTION will have an affect- as well as what is around you- city buildings that reflect and absorb noise, heavy woods, or open fields. It may vary from a few hundred feet to a mile or more.
They can shoot as far away as they want. There have been successful shots at well over a mile.
Pistol Star is located approximately 25,000 light years away from Earth in the constellation Sagittarius.
From 10 meters away .
200 kHz
"Hear" They can HEAR something up to 5 miles away
a lynx can hear a prey from 65 metres away
almost instantly.
25 miles away
ultrasonic
2 miles
yes they can, they can actually hear people from really far away
Possibly up to a mile or two away.