Stopping Power: Or Is It Knockback?

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Stopping Power: Or Is It Knockback?

Understanding Self-Defense

Terminator: 1984

When it comes to self-defense, people want the best of the best—within their budget. Thankfully, we live in an era where the likelihood of facing imminent threats isn’t a daily concern for most. However, recent years have seen a surge in the prioritization of personal protection. With many not knowing where to begin, they often turn to so-called authorities, receiving advice that ranges from sound and practical to outdated and overly dramatized.

 

 

 

What Is Stopping Power?

Stopping power refers to the ability to effectively halt a threat. It’s often confused with lethality, which measures the potential to kill. For example, pepper spray has significant stopping power but lacks lethality, which is why tools like rubber bullets, tasers, and stun guns are considered “less lethal” options.

For many, stopping power evokes images of physically halting an attacker in their tracks—an easy misunderstanding influenced by pop culture. However, this isn’t how stopping power works in reality.

 

The Myth of Knockback

Tropic Thunder: 2008

The idea of knockback—the notion that a bullet can physically stop someone charging at you—is a myth perpetuated by movies and video games. In entertainment, visual feedback helps us understand when the hero successfully hits their target. In video games, mechanics like knockback or dramatic animations communicate impact. On-screen, it’s undeniably cool to watch someone get launched through a window by a shotgun blast. In real life, however, physics tells a different story.

 

 

 

 

So What Exactly is Going On?

Every action has an equal and opposite reaction—Newton’s Third Law. The recoil you feel when firing a gun equals the force the bullet exerts as it leaves the barrel. If the recoil isn’t enough to knock you backward while standing still, that same force won’t be enough to push someone backward, even if they’re moving toward you.

Additionally, a bullet’s small surface area and high velocity mean it’s more likely to pass through the target rather than “push” it. Contrast this with steel targets: when you shoot a steel plate, it absorbs energy instantaneously in one direction, often toppling due to its lightweight design. A soft target, like a human body, disperses energy in multiple directions as the projectile passes through, creating wound cavities but no dramatic knockback.

 

Where Do We Stand?

The most critical factors for effective self-defense aren’t rooted in Hollywood-style myths but in preparation and training. Having the right equipment, a firearm you are comfortable and confident with will serve you better than purchasing something just because it’s more expensive. And more importantly, dedicating time to practice, and developing the mindset to act decisively when necessary. These are far more important than debating if a gun has sufficient stopping power or knockback.

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