Quote:
Sounds like you're looking for shortcuts to load development.
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Well, only in the loosest possible sense. The single difference in the recipe would be a bullet with a different length (but exact same weight). Since pressure is related to how deep the bullet is seated in the brass, if I reduce my COL by the difference in lengths, this will give me a round with
identical characteristics from the perspective of bullet seating depth, bullet weight. I don't see how I could come up with a better starting point for developing the load.