Lead-free bullets can sometimes fail to expand when used on small game or at longer ranges, and can also fragment when they strike bone. Sako fixes this issue with the Powerhead Blade Ammunition! These cartridges utilize a 100% pure ductile copper bullet with 5-stage terminal architecture. Upon impact, the blade tip is pushed down into the reaction chamber causing instant expansion even at longer ranges. The bullet continues to expand until the cavity wall is reached, this prevents over expansion as well as energy loss. Features of Sako Powerhead Blade Ammunition100% pure ductile copper bulletBlade tip5-stage terminal architectureReliable expansion on small game and at longer rangesBallistics coefficient: 0.499FPS: 2822 Sako Powerhead Blade .30-06 Sprg 170gr Lead Free Ammunition Box of 20 C631657ASA10XBX