This is .221 Fireball Remington Premier 50gr. Accu-Tip-V Polymer Tip Boat Tail Ammo. This ammo combines superb flight characteristics and match-grade accuracy with a design optimized for explosive on-game results. At impact, AccuTip’s gold polymer tip is driven rearward causing the thin jacket and soft lead core to fragment violently. First and foremost, though, it gets there precisely shot after shot – it’s the most accurate varmint bullet you can shoot. This ammo comes packed in 20rds. per box.