Thread: Trying something, Eric Cortina method of load development

What is interesting is that some of the loads with a higher E.S actually shot tighter groups, I can see why Cortina doesn't shoot is charge ladder at paper, it would be easy to be sucked into less consistent load (velocity wise).
As Cortina says group size on charge ladder is irrelevant.
Here is a pic of the best group I got today, aside from the fact it's very compressed it would be easy as a novice to look at that and go "job done"
But the E.S on that load is 58fps and who knows how erratic it might be over a larger sample this was only 3 rounds....
The load I am going to "tune" has an E.S of only 6fps which if I can get it to group better will be far more reliable when working out drops for longer shots, as it stands that load already shoots under an inch (.9") but I think I can get it better with some tuning.
Here is the half inch sucker group for reference