Super Suppressed ammunition is optimized for firearms equipped with suppressors. Offering clean and reliable performance, the Super Suppressed line is engineered for noise reduction, decreased barrel/suppressor fouling and recoil mitigation. Consistent performance and exceptional accuracy is backed by generations of Winchester legendary excellence. Features: Consistent Accuracy Trusted for target and range shooting Encapsulated Bullet Base Copper jacket encloses the base of the bullet core to reduce lead fouling in barrels and in suppressors Optimized for Suppressor Use Clean and reliable performance in both suppressed and non-suppressed firearms Reduced Noise Subsonic Velocities below the speed of sound produce lower decibel levels