Nosler's Whitetail Country ammunition featuring the Straight-Wall bullet is crafted with decades of hunting expertise and engineered specifically for deer. The Straight-Wall bullet designed for slower impact velocities common to straight-wall cartridges utilizes a flat base thin jacket mouth and lead nose for reliable expansion at extended range. The bullet's truncated nose profile ensures smooth feeding in all action types while the precisely form-fitted lead core enhances bullet stability and accuracy making Whitetail Country ammunition the ideal choice for deer hunters.This ammunition is intended for use in modern firearms in good condition. Not recommended for use in antique rifles "Trapdoor" Springfield rifles rolling block rifles or replicas thereof.