Most of the practical bullets that you’ll find are listed as SWC or Semi-Wadcutters. Their aerodynamics are terrible, so they’re rarely used beyond handgun range. Wadcutter rounds are normally used for large, slow moving bullets and got their name for the neat holes they made in paper targets. Soft point bullets generally use a rounded, lead tip to quickly mushroom out and transfer energy into the target for balanced expansion and penetration. They’re most commonly used for self-defense scenarios and sometimes hunting. Jacketed Hollow Points are copper clad but maintain a void at the tip of the bullet for faster expansion when striking soft targets. They feature a slower, controlled expansion for greater penetration. Full Metal Jacket (FMJ)įull metal jacketed bullets are typically copper-jacketed lead bullets. And in a lot of scenarios, the lines blur a bit, and it’s hard to really say which classic category a bullet fits the best. You can find anything from full metal jackets (FMJ) to wadcutters and everything in between. Handgun cartridges come loaded with a variety of bullet shapes, each tailored for a purpose. Strictly speaking, the caliber of a bullet is unrelated to the cartridge itself and the overall length of the round. These numbers are from Federal and specified for FMJ or JSP as available, nominal temperatures, 10 mph wind, sea level, 0.9 in sight height, and a 25 yd zero. 451 and is just shortened for convenience. Often, the actual diameter will be rounded from a third digit such as. 32 inches, while the 9mm Luger has a 9mm bullet diameter. For example, the 32 Auto has a bullet diameter of. Calibers units are classified into Imperial (inches) and Metric (millimeters). ![]() What is a Caliber?Ĭaliber is the diameter of a bullet at its widest point. ![]() or three? ) Our handgun caliber comparison (really cartridges) will go through the performance details and help you understand the differences. There are so many pistol calibers out there.
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