There's a persistent notion floating around, often whispered in discussions about firearms, that handgun rounds somehow possess superior "stopping power" at close range compared to rifle rounds. It’s a catchy idea, easy to grasp, and unfortunately, widely propagated. But as we dig a little deeper, it becomes clear: this is a myth, and a rather persistent one at that.
So, what exactly are we talking about when we say "stopping power"? In a more precise sense, it's the ability of a projectile to incapacitate a target – to make them unable to resist. It's about the effect on the person, not necessarily the bullet itself. The common argument for the handgun's supposed superiority often hinges on the idea that rifle bullets, being pointed, tend to over-penetrate, while handguns, with their less aggressive profiles, are more likely to tumble or fragment, thus imparting more energy. This line of reasoning, however, has a couple of fundamental flaws.
Firstly, who says all rifle bullets are pointed? While many are designed for aerodynamic efficiency and long-range accuracy, there's a whole category of rifle ammunition featuring round-nose or flat-nose projectiles. Think of cartridges like the .35 Remington, .45-70 Government, or even some older military rounds. These are designed for different purposes, and their bullet shapes vary considerably.
Secondly, and more crucially, the definition of stopping power is about incapacitating the target. The idea that a bullet stopping inside the target equates to greater stopping power is a misinterpretation. The goal is to stop the person, not the bullet. This is where the common misconception really unravels.
In fact, when we look at common handgun rounds like the 9x19mm Luger or the .45 ACP, especially with Full Metal Jacket (FMJ) round-nose projectiles, they are often more prone to over-penetration. These bullets are typically well-balanced and designed to maintain their shape upon impact. A 9x19mm round, for instance, with a standard 7.45g projectile traveling around 360m/s, has a muzzle energy of about 483 Joules. Its relatively uniform shape means it can pass through soft tissue with less deformation, potentially exiting the target without imparting as much of its energy as one might assume. The .45 ACP, with a heavier 14.9g bullet at around 250m/s (from a 5-inch barrel), yielding roughly 477 Joules, shares this characteristic. These stable projectiles are less likely to tumble or break apart, meaning they can punch through targets, including multiple layers of ballistic material, with relative ease.
This is precisely why specialized bullet designs like Jacketed Hollow Point (JHP) or Jacketed Soft Point (JSP) exist. These bullets are engineered to expand or fragment upon impact with soft tissue. This dramatic deformation is what increases the wound channel and the likelihood of incapacitating a target. However, this expansion comes at a cost: it can reduce penetration depth, especially against harder barriers. This trade-off between expansion and penetration is a key factor in bullet performance, but it's distinct from the simplistic notion of a bullet "stopping" to achieve greater effect.
It's also worth noting that the concept of "stopping power" can be a bit of a slippery term. In physics, "stopping power" has a more technical definition related to the energy dissipated by ionizing radiation per unit path length. While this is a different context, it highlights how precise definitions are crucial when discussing complex phenomena. In the realm of ballistics, focusing on how a projectile interacts with tissue – its expansion, fragmentation, and energy transfer – provides a more accurate picture than relying on outdated or oversimplified ideas.
Ultimately, the effectiveness of a bullet is a complex interplay of its design, velocity, mass, and the target's characteristics. The idea that a handgun round inherently has more stopping power than a rifle round at close range simply doesn't hold up under scrutiny. It's a narrative that needs to be retired, replaced by a clearer understanding of ballistic performance.
