Depends on the bullet type
Even more important is shot placement, and penetration. No matter the bullet or caliber, the important thing is to damage a vital area. An example of vital area can be the heart, lung, liver, aorta, large artery or vein, spinal cord, brain, etc. Rapid blood loss, and drop in blood pressure is deadly. So to is a shutdown of the central nervous system (spinal cord and brain). Accurate shot placement, (and penetration), to the center mass is most important.
A 22 caliber bullet is 22/100 inches in diameter. A 7.62 mm bullet is 30 caliber or 30/100 inches in diameter there is no such thing as a 7.62 caliber bullet
Caliber refers to the diameter of a bullet (bullet is the part of a cartridge that is fired out of the gun). A .223 caliber bullet is .223 inches across. It is normally used as a rifle cartridge. a .45 caliber bullet is more than twice as wide as a .223, and is usually used in pistols. The .223 is lighter- it weighs about 1/4 of a .45 bullet, and they are different shapes- .223 is usually pointed, the .45 is rounded.
Yes, a 45 caliber bullet is bigger than a 40 caliber bullet. A .45 is0.45 inches wide in diameter and a .40 is 0.4 inches in diameter.
The .22 bullet is smaller than the 9mm in size, (about 6mm) and is lighter in weight.
This is really a complication question, however here is a relatively short answer: Caliber refers to the diameter of the bullet fired. If absolutely everything else is equal, a larger caliber will create a larger hole in the target. If the target is a living being/animal, a bigger hole will allow more blood to escape or will cause more damage to the tissue, causing quicker death or incapacitation. In other words, the bigger the hole, the more lethal the shot is likely to be. However, the short version of the much longer answer is, there is much more to it than just that. Muzzle energy is a big part of it also, and a bullet with more muzzle energy will create more damage to the tissue. Also, a hollow point that expands and gets jagged will create more damage than the same size bullet that doesn't expand. Also, it depends on what the bullet damages. Lethality is basically a combination of those three things; how big the hole is, how much damage it causes, and what it damages. In other words, a .22 bullet directly to the heart is much more likely to be lethal than a .45 to the fat roll.
They are most certainly measured differently. The "50" in 50 caliber is measuring in inches and should actually be referred in writing as ".50 Caliber." The "5.56" is in millimeters (mm) and should be written as "5.56mm".To compare the two:.50 Caliber = 1/2 inch = 12.7mm5.56mm = ~ .2189 inchSo the .50 caliber bullet is roughly 2.28 times wider than the 5.56mm caliber bullet.
The Navy uses a .22 long rifle for their survival gun. the .22 will do less damage because of the slower bullet than a .17 caliber. go to survivalblog.com for more info.
I would say either the 5.56mm or the 7.62mm.
No
The short answer is no. The longer answer is, you might be able to get a .40 caliber cartridge to fire from a .45 caliber gun, but it may damage the gun, and even if it doesn't damage the gun, it will cause other problems. In general (with only a few exceptions) you should never try to fire any cartridge in any gun other than a gun designed for that caliber.
Unimpeded, a .22LR caliber bullet can travel up to 2000 yards. Its effective distance is, of course, much shorter than that.
25-06: The 25 means that it is a 25 caliber. The 06 means that it is a longer bullet than a regular 25 caliber bullet