Let me introduce myself as Robert Sauter, the founder of NwCP (Northwest Custom Projectiles). The bullets you'll find available by my company are all designs I've created as a solution to the problem with standard bullets. The rebated boattail bullet (RBT) is a design I'm particularly proud to be producing. This unique bullet, originally invented in the 1940s, has been proven to be up to 15% on average more accurate than standard boattail bullets.