How to read bullet sizes?

Bullet sizes are typically standardized and will be marked on the ammunition. For example, .223 Remington ammunition is typically used in rifles, while 9mm Luger ammunition is used in handguns.
The size of the bullet also determines its power. The larger the bullet, the more powerful it will be. Bullets are typically measured in calibers, with a higher caliber indicating a larger bullet size. A .223 Remington bullet is smaller than a 9mm Luger bullet.

When ammunition manufacturers stamp the caliber of a bullet on the side of a cartridge, they are referring to the diameter of the bullet in inches. For example, .30-06 Springfield ammunition is fired by rifles that use a .30 caliber bullet that is 0.06 inches in diameter.
The length of a cartridge also affects its size. A shorter cartridge will be thicker in diameter than a longer cartridge with the same caliber designation. For example, 9mm Luger cartridges (best 9mm ammo) are shorter and thicker than .357 Magnum cartridges even though both rounds fire bullets that have a diameter of .355 inches.

The size of a bullet is usually indicative of its power and intended purpose. Larger bullets are typically more powerful and are designed for hunting larger game, while smaller bullets are less powerful and are designed for target shooting.
However, there are exceptions to this rule, and it’s important to always consult the manufacturer’s specifications to be sure. For example, a .22 caliber bullet is typically smaller than a .30 caliber bullet, but the .22 caliber bullet is much more powerful than the .30 caliber bullet.

There is no standard system for reading bullet sizes, but there are some general principles you can use to get a basic understanding. Larger bullets often indicate a more powerful cartridge, while smaller bullets usually denote a weaker round. However, there are many exceptions to this rule, so you should always consult a firearms expert if you’re unsure about the power of a particular cartridge.

In addition, bullet size is not always an accurate indicator of stopping power. A small bullet can still be very effective at stopping an assailant if it’s shot accurately and hits a vital spot. Conversely, a large bullet might not have the same effect if it misses its target or glances off its body armor. So remember that bullet size is just one factor to consider when choosing the right ammunition for your needs.