Rost - that's a good point, I think it's a lot of which end of the stick you approach from. I'd be shocked if the best/most consistent load also wasn't one that showed it in ES/SD for those components selected.
How you arrive at it - might not matter. Or you might not even measure it but are "there". I know a lot of people who don't own a chrony. Shoot at 100, shoot at say 600 - measure the drop and plug into software to arrive at what their speed must be - if they have utmost confidence in the BC being accurate.
It's all another way to catch fish I guess. Just wanted conversation that was deeper than cartridge comparisons.
