How far a 9mm pistol bullet travel?
A bullet from a 9mm pistol generally has the range of 2500yds, but rarely travels that far because before it can it generaly hits something. So in other words with a open range it can travel a little over a mile.
Effectively, and expecting to be able to hit your target, you'd be looking at about 25 metres, under ideal circumstances. The bullet may travel significantly further, but most of your 6.35mm pistols are "pocket pistol" designs, intended only for the closest of ranges. As far as how far the bullet will travel, it may travel up to 500 metres or more, under the right circumstances.
You do not mention which 9 mm cartridge you are asking about. As the 9mm Luger (parabellum) is the most popular handgun load in the world, I assume this is the one? The maximum listed range is about 2200 metres. Actual distance will vary depending on the grain weight of the bullet (for the 9mm luger, from 100 to 147), barell length, and other factors.
The distance a bullet will travel is dependent upon many factors. The three greatest factors in determining the distance a bullet will travel are caliber of the bullet, the weight of the bullet, and the trajectory used when firing the weapon. Many ammunition manufacturers provide "maximum" distances on the individual packages of each type of bullet.
All bullets "begin losing power" as soon as they leave the barrel- and continue to lose power until they stop. Firearms have a maximum range- how far can the bullet be driven- and a maximum effective range- How far can I HIT a target consistently with this gun/cartridge. Most 9mm pistols have a maximum range of about 900 yards- but at that distance, you cannot reliably hit anything except the Earth. An average max effective…
In optimal conditions, with the wind to your back, you firing the 1911 at a 45' angle, the bullet could travel a mile, or more (1.6km+). Now, to ACCURATELY hit a man-sized target, 50 meters would be considered pretty far. With training, maybe even up to 100 meters (aiming a few cm above the target, to compensate for the bullet drop). Most pistol ranges are set at 5, 7, 10, 15, 25 and 35 yards.
Caliber is simply the diameter of the bullet in the cartridge. It can be expressed in hundredths or thousandths of an inch, such as .40 or .45, or it can be expressed in millimeters, such as 9mm or 10mm. As far as actually physically measuring it, the bullet's diameter can be measured with a caliber gauge.