This is .223 Remington Express Power-Lokt 55gr. Hollow Point Ammo. Remington Power-Lokt delivers unmatched performance for small game and varmint hunting. The thin copper jacket is electrolytically plated to the lead core for near-perfect concentricity and gyroscopic balance. The result? Dead-on, benchrest-type accuracy with instant fragmentation on impact. This ammo comes packed in 20rd. boxes.