HSM Sierra Gameking SBT 150 Grains .308 Winchester Ammunition 20 Rounds Features: Hunting Shack Munitions is a Montana based ammunition manufacturer that has been providing some of the finest ammunition to shooters hunters law enforcement agencies and military units for over 40 years! HSM was founded in 1968 and has grown to become one of the leading manufacturers of specialized ammunition products in the country. Made in the USA and proud to be Veteran owned and operated. Sierra GameKing Bullets are designed for hunting at long range where their extra margin of performance can make the critical difference. GameKing bullets feature a boat tail design to bring hunters the ballistic advantage normally found with match target bullets. This ammunition is new production non-corrosive in boxer-primed reloadable brass cases. HSM Sierra Gameking SBT 150 Grains .308 Winchester Ammunition 20 Rounds Specifications: Manufacturer Number: HSM-308-41-N Caliber: .308 Winchester Bullet Type: Sierra GameKing Spitzer Boat Tail (SBT) Bullet Weight: 150 Grains Rounds: 20 per Box Bullet Diameter: .308 Jacket Material: Copper Core Material: Lead Tip Material: Lead Sectional Density: 0.226 Ballistic Coefficient: .380 Casing: Brass Usage: Deer Medium Thin Skinned Game