They feature a spitzer boat-tail design and polymer tip that deliver flatter shooting performance. Recommended for use in in-line muzzleloaders, these bullets expand up to double their original diameter and retain nearly 100% of their weight. The result is incredible terminal performance and quick, humane kills. Snug-fitting sabot prevents gas blow-by, ensuring consistent velocities and tight groups. The Barnes 50 Cal 250 Grain muzzleloader bullet is intended for black powder muzzle loading rifle use.