If you take away bullet diameter advantage, people will go back to shooting 22's. Not much sense in shooting a 30 when I can shoot a 22 ppc or its variants. Less cost and less recoil. But if you want to return to yesteryear (roughly 25 years) that is fine. Remember that the 6ppc became popular because of caliber restriction, otherwise we would still be shooting the 22's. When someone making there own bullets decides to try a .40 caliber, the experimentation/innovation will begin anew. It is what it is. Those that shoot 9's every once in a while want to adopt the x being 11 points so they can get back into the game. Those who don't want recoil want to measure from center of bullet hole. As long as I know the rules up front, it doesn't matter to me. I'll adapt or get out. Randy J.