Thread: Trying something, Eric Cortina method of load development

Originally Posted by dannyb

What is interesting is that some of the loads with a higher E.S actually shot tighter groups,

Or the Chrono is having a bad day and you already have a real nice load but the high ES on the day leads you down the garden path

That's why lot's of data is king - and I partly disagree with Eric.
While doing a ladder test, you are already clocking up load # on the brass, using primer, burning powder, sending down lead and investing time so you may as well use the additional information of group size for your load development. Doesn't mean you trust the first good group OR the first low ES you come across but you rather go back to confirm and form a clearer picture over time on a ladder.

Bottom line for me is, I don't trust my performance on the day + I don't trust the chrono so I use repetition to filter out background noise.