Is it nothing more than a fad fuelled by the majority of shooters inability or insecurity, I wonder? Im not trying to knock this chambering, I think my question is valid as we see in life every day instances where guy pass up on the 'old' for the 'new improved' only to end up with no real world benefit. The 6 Dasher has been and still is the darling of the 6mm BR scene, has there really been enough testing by people who are really good enough to test in a fair and methodical manner to show it has a real world advantage over the 6 Dasher or even the 6BR over the shorter ranges? Can we even realistically test in such an accurate manner to make the results valid? A big shift towards the next wonder caliber and a few new records doesn't really prove much to me, who can prove that on that particular day the record wouldn't have fallen to the 6BR or Dasher had it been used? Im about to build myself a 6 BRA so Im far from against the latest 'magic bullet' but there is a part of me that is already telling myself it wont really do anything my older 6 Dasher chambering hasn't already done.