Unlike conventional fmj bullets that leave lead exposed at the base, speer uses uni-cor technology to completely encase the tmj bullets lead core in a seamless jacket.Its cleaner, more accurate and more consistent than any fmj.Coefficient: .131Bullet Type: Total Metal Jacket (TMJ)Bullet Diameter: .355Weight: 95 grBullet Caliber: 9mmJacket Material: CopperCore Material: LeadCannelure: NoSectional Density: .108Quantity: 100 Per BoxRecommended Usage: Target