CBA has been partially responsible for the progress we have made in shooting CBs in fixed ammunition (as opposed to breech seating) over the last forty years but that progress has mostly stopped. Those shooting specialized custom rifles with no restrictions cannot consistently shoot aggregates of 5-shot groups much under 0.5" at 100 yards. Those of us who like to shoot unmodified factory or old military rifles cannot consistently shoot 5-shot aggregates much under 1.0" at 100 yards. We have been able to shoot to this level of accuracy for at least ten and maybe twenty years with little improvement.
The first of the four stated "purposes" of the CBA on the back of every Fouling Shot says: encouraging experiments that will improve the accuracy and effectiveness of the ammunition and increase the satisfaction and enjoyment of shooters. Many, probably most, of us that shoot CBs in rifles want to improve either to enhance our competitiveness if we like to shoot in matches or simple to do better for field use or personal satisfaction if we don't.
What is the best way to achieve that improvement? Up until now many have thought that uniformity was the road to improvement. Ever more uniform weights of cases, powder, bullets, even gas checks and primers, ever more uniform sizes of bullets, flash holes, primer pockets, ever more cleanliness of bores, case necks, primer pockets and inside cases. Other efforts at improving uniformity have included using only one case, using nose pour molds or turning bases to achieve perfect bases, shooting bullets in the order they were cast, indexing bullets, cases and even primers.
It is hard to argue against uniformity but easy to see that more and more isn't always better and some of the above have been grossly overdone and achieved nothing. Many of our best shooters have found many of the extreme attempts for uniformity listed above were worthless and have abandoned them.
Paul Pollard has asked in the thread on factory ammunition what should we be working on to improve?
Because we have already tried pursuing uniformity to the point of foolishness, that approach doesn't look promising for future improvements. I hope we can start a discussion on what are some of the promising ways that should be explored in order to shoot CBs more accurately? What do you think?