The nose tip of this bullet is made of a proprietary acetyl resin compound, and the sharp shape will improve the ballistic coefficient over the traditional Spitzer bullet design. The 39 grain BlitzKing 1039 has a boat tail. All the BlitzKing bullets in 20 caliber are designed to handle high muzzle velocities from cartridges like the 204 Ruger, and can easily handle velocities from others like the 20 Tactical and 20 Vartarg. This bullet was designed to be the perfect length and stabilize in the 204 Ruger’s original 1-12″ twist barrel. The 1039 was introduced in 2005.