This 9mm cartridge features a 124 grain projectile. It�s a redesign of PMC�s Starfire bullet, which utilizes ribs and flutes in order to strategically weaken it that it may double its diameter during penetration. This bullet�s hard jacket not only ensures that it can penetrate a target reliably, but furthermore facilitates smooth feeding in a semi-automatic. The bullet�s profile itself works toward that end as well, so you�ll be far less likely to be put over a barrel by a jam when you�ve chambered an SFX round. This round�s brass casing, non-corrosive primer and case mouth that are both sealed against intrusive water, and uniformly loaded propellant are all similarly able to be counted on during a fight, making this round totally worthy of your weapon for self-defense.