Long ago, In the days of yore, it was common knowledge that cast bullets had to be seated into the throat with the bullet indexed to be in the same rotational position every time to get decent, much less competitive, precision from the load. This was accomplished by either making a punch mark on the mold that would show on the bullet or marking the bullets while still in the mold. The bullet would then be inserted each time with the mark at 12 o’clock or some other selected position when a bullet was chambered. Some true believers believed the cases also had to be indexed for best results, as did jacketed benchresters at the time. At least one excellent shooter in the schuetzen game believes it improves his scores to index primers so one leg supporting the anvil in in the same position for each shot.
There were articles, by some prominent CBA shooters, in the early Fouling Shots as well as in NRA publications reporting experimental results of indexing shrinking groups to less than half the size of groups with unindexed bullets.
When I passed out questionnaires to shooters at the 2019 CBA nationals find out their practices, I forget to put indexing on the questionnaire. To try to remedy that omission, I would like to ask two questions. How many of you index the bullet for your serious loads? And has anybody run a shooting comparison using indexed bullets vs. unindexed bullets to see if you ought to.
Thanks in advance for responses.
John
