Boat tail bullets are the same. The benefits of the boat tail design does not overcome the detrimental effects of the initial aerodynamic shockwave effects on the bullets nose caused by the boat tail till after about 600 meters. You're saying how can the design of the tail of the bullet effect the nose? It has to do with fluid dynamics and how the shockwave forms around the bullet. Were talking a half second here too so it stabilizes after the effects become organized. Anyways that's why some bullets dont provide benefits till after a certain distance which is really just the time needed for this to happen.