Mas referred a poster to BBTI, http://www.ballisticsbytheinch.com/9luger.html. BBTI will give me the velocity of each round for every length of barrel. I haven't explored it far enough to know about this though: Is there a resource that gives optimum velocity for best expansion in various HP loads in "target medium"? I ask because I was rather disappointed with expansion of my Gold Dots out of my G27 as compared with my old G22. Wanna kill these ads? We can help!