Full metal jacket (FMJ) and hollow point are two popular types of ammunition; with one better used for defensive situations and the other more of a practice round. Hollowpoints lead to dangerous underpentration if they work as advertised. Jacketed Hollow Point vs. Full Metal Jacket. Hollow point bullets are usually jacketed as well around the conical exterior. 4. This can potentially cause injury to others beyond the target. The consensus within the firearms community would agree that full metal jacket rounds are best for any bulk volume or high round count shooting (i.e., competitive shooting sports, general practice and drills). Though seasoned shooters likely understand the difference between these types of bullets, it can be difficult to define the differences and best applications of both without experience. Hollow point ammunition with modern bullet designs such as JHPs is designed to expand upon impacting soft tissue to stop your attacker efficiently. Take a look at the gel tests we conducted below: The five rounds of 124 grain Federal HST I shot with my 9mm Shield penetrated through four layers of heavy clothing, expanded, and then came rest at an average of 16.24 inches into the gel. Jackets wrap and surround many hollow point bullets. There is a great deal of difference between HP and FMJ types, but when it comes to carrying a pistol for self-defense those differences are even more important. Simply put, a good jacketed hollow point does that, full metal jacket rounds don’t. There’s an unwritten rule of firearm ammunition: use Hollow points for your carry/home defense guns and use Full Metal Jacket (FMJ) for practice. Mainly because it will expand upon hitting the target and transfer more energy to the attacker, creates a large wound, and thus significantly improve the chances of disabling the attacker in his tracks. For those that may be new to carrying a pistol, they may not know the difference or importance between hollow-point (HP) and full-metal jacket (FMJ) ammunition. In conclusion, jacketed hollow point defense ammunition is far more effective for self-defense compares to full metal jacket ammunition. The .45 ACP did not expand at all. I don’t use a hollow point in anything with less energy than a .357. The hollow point and the polymer tip will help to mitigate the danger of the round passing through the … A jacketed hollow point (L) and solid copper hollow point after expansion. Both from a functional point and from the safety stand point. When comparing JHP vs. HP, some jacketed hollow points will look just like traditional hollow points, but will be obviously coated. Since FMJ ammo doesn’t typically deform when encountering a barrier, over penetration frequently occurs. FMJ ammunition is typically a lead bullet encased by a harder metal. Yes Full Metal Jacket bullets will punch holes but there are far better choices for self defense ammo. 3. This is probably the result of a much thicker jacket than the 9mm. Of course, the two most popular categories are Full Metal Jacket (FMJ) ammo and Hollow Point (HP) ammo. A jacketed hollow point benefits performance by promoting smoother feeding in a semi-automatic weapon, reducing the rate at which the bore fouls, facilitating penetration of the target, and controlling expansion so that it occurs in a reliable fashion. The lead .38 Special shed its petals, but didn't expand at all. Ammo by Double Tap Ammunition. Others will have a more advanced and high-tech appearance. Others will have a more advanced and high-tech appearance. On the other hand, the modern, bonded jacketed hollow point 9mm bullets are superior to full metal jacket projectiles, providing the minimum performance standards we are looking for self-defense. 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