If you’re on a budget, just getting started, or just want an all-around gun, flexibility is important. The balance of power is the key.ĭ epending on what you’re shooting at you may need far less than you think. Just like you wouldn’t use a Ford Fiesta to move a boat you wouldn’t get in an 18-wheeler to drive to work. Velocity is a great thing but without an adequately heavy bullet, velocity is irrelevant. Bullet weight is what causes penetration and lethality.Ĭartridges that throw heavy bullets at medium velocities are more powerful than a lighter bullet traveling faster because light bullets lack the ability to penetrate and cause damage. Bullet weight is the “transmission” that causes penetration. Without the transmission, the truck won’t get off the line. You can think of the velocity of the bullet like the engine on a truck. It produces all the power/force necessary for the truck to move, but the transmission is what connects the engine to the wheels.

While they are related…they are two different beasts.ĭefining the exact power of a cartridge is hard to nail down in a scientific sense. Numbers such as the kinetic energy of a round can tell you a lot about a round but it’s certainly not the only important thing. The power of the cartridges involves two main types of power: penetration and velocity. It may seem like these two types are the same thing.

Cost: Cheaper is always better, the cheapest rounds tend to be the best and most widely used.

Availability: More is always better here, consider not only the supply but also the demand.

Flexibility: A feature that sounds great in theory but can be hard to pull off.

Power: This is the biggest balancing act and involves the most real-world experience.

The basic categories to choose a cartridge involve compromises of power, cost, and usefulness…just like deciding on the perfect car.

Picking the right rifle cartridge can change almost everything about the characteristics of your rifle. How to Choose an Alternative AR-15 Cartridge/CaliberĬhoosing a rifle cartridge isn’t as simple as just picking the one that’s the most powerful or the coolest.

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