lohaht.blogg.se

There are many different types and brands of JHP cartridges, more than we can list here. JHP (Jacketed Hollow Point) – this bullet consists of a lead or other core covered by a copper jacket with a carefully engineered and tested opening in the bullet’s exposed, soft nose. Depending on the manufacturer your FMJ might have a different color than most.įMJ bullets are great for practice, competition, or as less expensive ammo in order to save costs. The important point is that only copper touches the barrel’s rifling, unlike a cast lead bullet that has no metal coating. 4 of the best 9mm ammo types (and a battery for scale) from left to right: AAA battery, Full-Metal Jacket, another FMJ, Federal HST Jacketed Hollow Point, and Hornady Critical Defense FTX Polymer Tipped Jacketed Hollow PointįMJ (Full-Metal Jacket) – A copper “jacket” encases a lead core. While any part of the cartridge can change the performance characteristics, the bullet design will have the most impact on the target since it is what literally impacts the target. While you’ll often hear people use “bullet” as slang for the entire cartridge, technically speaking a bullet is just one part of the cartridge. Hopefully, we all know what a bullet is – that’s the projectile that exits the barrel (at least that’s the plan). Bullets The basic elements of a 9mm cartridge (left to right) primer, case, powder, and bullet.