45 ACP load claims a leisurely 1,900 feet per second. The 9mm Civil Defense load has a velocity rating of 2,000 feet per second while the. The 9mm load did what it said it would – fragment violently, then penetrate to over 10 inches. 45 ACP loads were noticeably louder than standard loads with more traditional bullet weights and velocities. I’m just passing along the observation that both the 9mm and. Since I’m one that considers happiness as the sound of gunfire, I didn’t care. However, since the velocity is through the roof on both of these loads, you will hear some significant noise. In a handgun application, that’s great for reducing flinch and facilitating quick follow-up shots. That physics thing about weight and velocity is legit, and lighter bullets like those used in the Civil Defense load will feel a lot easier on the shooter. Meaning there was hardly any, for either caliber. That’s the design theory let’s see how the two calibers performed. The desired results is a big wound channel followed by 10 inches or so of penetration from the base of the projectile. The bullets aren’t scored, cut, or pre-fragmented, they just break apart from fluid pressure. When it hits an organic target (read liquid-filled), the pressure of liquid against the interior of the cavity causes the projectile to split up into multiple fragments. The idea behind the bullet design is that the solid copper, nickel-coated projectile will pass through barriers without major upset or deformation. I described it as a hollow point, and it appears that way, but it’s not designed to expand in the traditional manner. The cavity is cut nearly of the base of the bullet itself. When you look into the “hollow point” cavity of a Civil Defense bullet, you’ll see a seemingly bottomless hole.
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