This is a SINGLE FEED bullet was designed for large cartridge .375 rifles. Curtting Edge's MTHA(R) line is machined out of lead free solid copper bar stock on a CNC lathe. These are a high BC, expanding bullet designed for hunting at all ranges. A unique feature of this bullet is their patented SealTiteA(R) band which is a band slightly larger than caliber diameter around the bullet which was designed to eliminate fliers by preventing gas blow-by. The SealTiteA(R) band also decreases copper fouling which is typically associated with mono metal bullets. These bullets do not mushroom, but instead, fracture. After 1-2"" of penetration, 3-4 petals will break off and ra Mfg: Cutting Edge Bullets