Unless I missed something, the object of shooting short range benchrest matches is to win them. If you think that the people who are are shooting PPCs because they lack the imagination to consider alternatives I respectfully suggest that you rethink your position. They come to win, with the best equipment that they can find. While many are on a budget, some are not. With all of their experience, if they thought that another cartridge would give them an edge, they would be shooting it. Over the years, there has been a lot of experimentation. The net result is that for IBS or NBRSA score, build a .30 BR. For short range group, build a 6PPC. If you want to shoot something different, good luck. I wish you well, but chances are, at least in group, you will be decreasing your chance of winning. On the other hand it is your hobby, and if that makes you happy, be happy, and if your success makes a liar of me, I will be smiling when I read about it.