Generally speaking, the .45 caliber bullet is larger in diameter and heavier than a 9mm bullet.
The highest speed i know for a bullet is the .50 Cal BMG bullet at about an average of 2800 Feet per second or 1901 M.P.H
a 50 cal about 580 mph
Problem is not the speed, it is speed coupled with the very small size of a bullet. Tracer ammunition is readily visible to the human eye because of the bright dot of flame at the rear of the bullet. On sunny humid days, it is possible (if you know what to look for, and where) to observe the white vapor trail behind a .30 cal rifle bullet traveling over 2000 fps. It is called the "trace" of the round- caused when air expands back into the tunnel of vacuum the bullet just drilled into the air- and water vapor is briefly visible when it cools quickly. BBs are usually visible to a shooter, but air rifle pellets are not, so split the difference in speed, and it may be visible. Probably faster than 350 fps, but slower than 550.
a s.w.50 caliber or ( special weapons ) also known as the snipers weapon and is about 5.45" in length, either it has a red, black, silver or blue tip That really didn't answer the question. Here is what you need to consider when trying to answer this question. #1 What is the weight of the bullet? If you're talking about a 750 grain .50 BMG, then it would not travel very far. Is this a Beowulf .50 cal or a Browning Machine Gun .50 cal? You can get exterior ballistics software on-line to calculate exactly what your looking for.
It depends on a number of factors including propellant charge, bullet weight and barrel length. Handgun muzzle velocities range from about 750 feet per second and 1350 fps. Ordinary rifles go up to about 3,000 fps. Some specialty rounds go above that. For an idea of the variation: using the same 357 Magnum round, a snub-nosed revolver will eject the bullet at 1,100 fps, a match revolver at 1350 fps and a 16" barrel rifle at 1,850 fps. Your standard-issue .45 cal pistol ammo has a muzzle velocity around 850 fps.
9mm = .355 40 cal = .40
Both terms describe the diameter of the bullet in decimal parts of an inch. For example, a .357 bullet is 357 thousands of an inch in diameter and the .45 bullet is 45 hundredths of an inch in diameter. These labels of bullets are most common in the United States. Much of the world refers to bullet sizes in metric terms, i.e. 9mm means a bullet that is 9 millimeters in diameter.
The caliber for one.
the 380 is a 9mm short
4.5 cal (9mm) like most guns
no, although the diameter of the bullet is about the same .356 for 9mm and 357/358 for the 38 cal. that metal cases will not interchange with other guns. i.e., the 9mm case does not feed in a 38 nor will a 38 feed in a 9mm..................
The 9mm Lugar round is longer than a .380 Caliber, which is also equal to 9mm in diameter. The overall cartridge and the bullet is larger and the case contains more powder. The 9mm Lugar is more powerful. BTW, the .40 cal Smith and Wesson is also called a 10mm. It is only 1mm larger in diameter and a little more powerful than a 9mm Lugar.
The .357 has a longer case and a heavier bullet; it is identical to a .38 in diameter but far more powerful. This is why a .38 will fire in a .357 but not the other way around.
The diameter. A .41 cal is about 41/100ths of an inch, and a .44 cal about .44/100ths of an inch, In real life, the measurements may be slightly different, but in general, the .44 cal is larger.
uuhhh... no, you cannot fire a 9mm parabellum through a .40 s&w.9mm converted to inches is .35 now you see that .40 is a little wider.
22 caliber is the diameter of the bullet. 22 cal. comes in BBcap, short, long and long rifle
All else being equal, the one that has more foot pounds of energy.