As an expert in ballistics and firearm dynamics, I can provide you with detailed information on the velocity of .223 caliber bullets. The .223 Remington is a popular and versatile cartridge used in various firearms, such as the AR-15 platform. The velocity of a bullet is a critical factor in its performance, affecting both its accuracy and terminal ballistics. It's important to note that the velocity can vary significantly based on several factors, including the bullet's mass, the type of powder used, the barrel length, and the atmospheric conditions.

Step 1: English Answer

The velocity of a .223 caliber bullet can range from approximately 2,950 ft/s (900 m/s) for heavier bullets to over 3,750 ft/s (1,140 m/s) for lighter ones. Here's a breakdown of the velocity for different bullet masses and types, as you've provided:


1. 36 gr (2 g) JHP (Jacketed Hollow Point) - This bullet type is designed for rapid expansion upon impact, which can be useful for hunting or self-defense. The velocity is listed at 3,750 ft/s (1,140 m/s), and it carries an energy of 1,124 ft·lbf (1,524 J).


2. 55 gr (3.5 g) Nosler Ballistic Tip - The Ballistic Tip bullets are known for their high accuracy and reliable expansion. They have a velocity of 3,240 ft/s (990 m/s) and an energy of 1,282 ft·lbf (1,738 J).


3. 60 gr (3.9 g) Nosler Partition - The Partition bullets are designed to split into two parts upon impact, providing a large wound channel. These bullets have a velocity of 3,160 ft/s (960 m/s) and an energy of 1,330 ft·lbf (1,800 J).

4. **69 gr (4.48 g) BTHP (Bi-Metal Tip Hollow Point)** - These bullets are heavier and have a bi-metal tip for better long-range performance. The velocity is 2,950 ft/s (900 m/s), and they carry an energy of 1,333 ft·lbf (1,807 J).

It's important to remember that these velocities are typically measured at the muzzle, which is the point where the bullet exits the barrel of the firearm. As the bullet travels through the air, it will decelerate due to air resistance and other factors. The bullet's trajectory will also be influenced by factors such as gravity and wind.

The energy of a bullet is another important consideration. It's calculated by multiplying the bullet's mass by its velocity squared, divided by a factor that accounts for the air resistance. The higher the energy, the more damage a bullet can potentially do upon impact.

Step 2: Divider

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.223 RemingtonBullet mass/typeVelocityEnergy36 gr (2 g) JHP3,750 ft/s (1,140 m/s)1,124 ft?lbf (1,524 J)55 (3.5 g) Nosler ballistic tip3,240 ft/s (990 m/s)1,282 ft?lbf (1,738 J)60 (3.9 g) Nosler partition3,160 ft/s (960 m/s)1,330 ft?lbf (1,800 J)69 (4.48 g) BTHP2,950 ft/s (900 m/s)1,333 ft?lbf (1,807 J)1 more rowread more >>