# How many FPE is a 22lr?

Answered by Michael Wilson

The 22 long rifle, commonly known as the 22lr, is a popular and widely used ammunition in firearms. It is known for its relatively low recoil, affordability, and versatility. In order to determine the amount of foot-pounds of energy (FPE) produced by a 22lr round, we need to consider the weight and velocity of the bullet.

A typical 22lr bullet weighs around 36 grains, which is equivalent to approximately 2.33 grams. The muzzle velocity of a 22lr bullet can vary depending on the specific firearm and ammunition used, but it is commonly around 1250 feet per second (FPS).

To calculate the FPE, we can use the formula:
FPE = (Bullet Weight in Grains x Velocity in FPS^2) / 450240

Using this formula, we can calculate the FPE of a 22lr bullet as follows:

FPE = (36 grains x 1250 FPS^2) / 450240
= (36 x 1562500) / 450240
= 56250000 / 450240
= 125 FPE (approximately)

Therefore, a typical 22lr bullet produces around 125 foot-pounds of energy at the muzzle. This energy measurement gives an indication of the bullet’s potential impact and stopping power.

It is important to note that the FPE value mentioned here is for the muzzle energy, which refers to the energy of the bullet when it leaves the firearm’s barrel. As the bullet travels downrange, it loses velocity and energy due to factors such as air resistance and gravity. The energy of the bullet decreases over distance, and thus, the FPE value will also decrease accordingly.

While the 22lr is not considered a high-powered round compared to larger calibers, it is still capable of delivering sufficient energy for various applications such as target shooting, plinking, small game hunting, and pest control. The relatively low recoil also makes it a popular choice for beginners and those seeking a more enjoyable shooting experience.

In my personal experience, I have used the 22lr for target shooting and small game hunting. Its accuracy and affordability make it a great option for honing shooting skills and taking down small game such as rabbits or squirrels. However, it is important to always follow local laws and regulations regarding the use of firearms and ammunition.

To summarize, a typical 22lr bullet weighs around 36 grains and travels at approximately 1250 FPS at the muzzle. This results in an estimated muzzle energy of around 125 foot-pounds. The 22lr is a versatile and widely used ammunition choice, suitable for various shooting applications.