Some .40 caliber bullets are supersonic and some are not; it depends on the load. Generally lighter bullets (155 grain or less) will be supersonic, and heavier bullets (165 grain or more) will be subsonic, although there are a couple 165 grain bullets out there with advertised velocities about equal to the speed of sound.
No matter what bullet you purchase, if you feel like subsonic/supersonic is a difference-maker to you, then check the manufacturer's specifications on the ammunition you're purchasing.
.40 caliber bullets. Was this a trick question?
The correct term is cartridge, not bullet- and the answer will depend on WHICH .40 caliber pistol.
No, some weight more than others.
the three bullets that shot him in the chest were 40. caliber pistol rounds
Caliber means the diameter of the bullet. A .40 caliber cartridge has a bullet that is .40 inches in diameter. A 9mm cartridge has a bullet that is 9 millimeters in diameter. Yup...reminds me of Joe the Human Cannonball at the circus...Poor Joe died but they couldn't find a replacement of his caliber.
No, bullets are accelerated by rapidly expanding gasses. Those gasses are in a cylinder only open at one end. The bullet acts as a piston, and is pushed out of the open end of the cylinder. Not all bullets are supersonic, but those that are become supersonic from the amount of acceleration, and the time it is applied.
30-06 caliber bullets
The .45 caliber is bigger in diameter. If you mean weight. The .45 caliber is generally heavier. However there are some lightweight .45 caliber bullets that are lighter than .357 caliber bullets. Generally speaking .45 caliber bullets weigh between 180 - 230 grains. While .357 caliber bullets generally weigh between 158 - 180 grains. If you are talking about diameter, the .357 caliber bullets are approximately 0.357 inches in diameter. The .45 caliber is approximately 0.450 inches in diameter. Again, using this measure, the .45 caliber is the larger bullet.
Caliber is the size designation for rifle and handgun bullets. Guage is the size designation for shotgun rounds.
the caliber or gauge
diameter
Yes, but it is travelling supersonic so you don't hear it until it has passed you or just reached you Not all bullets are supersonic.