A-Frame Features Swift A-Frame Heavy Rifle Bullets boast a unique cross-member copper jacket design coupled with a bonded front core. This A-Frame is proven to produce three key elements of high performance including controlled expansion 95 percent weight retention for all velocities and deep penetration. To produce these characteristics the bullet consists of a soft-semi-Spitzer lead nose designed to protect against felt recoil while still in the magazine a tapered jacket around a pure lead core that controls expansion rate and a wraparound jacket on the base. Compared to the competition this uncoated bullet outperforms. A-Frame Specifications Brand: Swift Bullet Type: AFRN Grain: 570 Gr Reloading Caliber: 500 Cal Reloading Diameter: .510 Rounds: 50