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What You Need to Know About Knock Down Power

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When it comes down to it, concealed carry means having the ability to stop a violent threat to your life as soon as possible. Know the sides of the Knock Down Power argument before you wade in.

The Role of Velocity in Knock Down Power
Kinetic energy is all about how much force the bullet has as it’s traveling. That’s basically determined by looking at how fast it travels (feet per second FPS) and how much it weighs (bullet weight in grains).

In this equation, velocity is the key. That means that a 9mm, traveling around 1400 FPS, would be a better bet than a .45 ACP, traveling around 1100 FPS. One arrives at its target much faster but with less weight behind it.

One of the downsides to increased velocity is barrel length. As the barrel shortens FPS will go down as well.

How Potential Damage Affects Knock Down Power
This side of the argument usually relies on the Taylor Knockout Factor (TKOF), which takes the equation above and adds in the diameter of the bullet.

Obviously, a larger bullet is going to do more damage to a target in the form of a bigger hole. Using this element of knock down power, bigger calibers like a .40 S&W, weighing in at 180 grains, rank fairly high with a TKOF of 10.18. Compare that to the tiny .22, who packs a punch of TKOF 1.33.

Accuracy Equals Effectiveness 
No matter what side of the knock down power discussion you find yourself on, one well placed shot will bring down an attacker faster than ten off target blasts. Your caliber could have the power to bring down a charging elephant, but if you can’t find the target it won’t do you a bit of good.

You should be carrying the most powerful caliber of handgun that fits you and your lifestyle. Larger caliber bullets can be expensive, and heavier handguns can be more difficult to carry everyday.

Take the time to research what you’ll carry by reading up on the caliber and taking plenty of practice shots. It’s up to you to decide what works best for you, because ultimately, any caliber used in self-defense is better than no caliber.

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