PMC 308B: PMC Ammunition\'s popular Bronze Line provides high-performance velocity and accuracy in a cost-effective cartridge. The affordability of the Bronze Line makes it ideal for any situation involving high-volume shooting without compromising downrange results. The Full Metal Jacket (FMJ) cartridge consists of a lead core bullet enclosed in a heavy copper jacket, resulting in little or no expansion and deeper penetration of the bullet. FMJ is practical and popular for target shooting and many hunting applications where increased penetration is required.