Nobody with understanding of ladder testing has suggested that '1 shot samples' will provide a final load. The quest at this point is only to find a window of potential, for components chosen to that point(for longer range shooting than 100yds).
In the end, anyone would go to traditional 3-5sht group testing, inside a window, brought to light by a ladder.
It's one step, and given all the begining abstracts, it's a good place to start for many shooters.
Not all shooters
B-RAD's pile of guesses quickly landed him satisfactory performance -for 100yd grouping -with a 14tw Cooper. If he ever tests farther out, then, maybe he'll come to appreciate ladder testing.
Why? Because 100yd grouping is not directly representative of 500yd grouping. And neither is representative of ACCURACY, much less cold bore accuracy.
But then again, maybe he's done..
For long range load development;
I'm not lucky enough to grab every combination in the cabinet, assume a seating depth and primer, throw together 5sht groupings of every one in just 2-3 charge increments,, shoot em at 100yds,, simply pick the best group from one combination,, shoot several brazilian shot Bart-B groups, and with remaining barrel life find that I've hit on something worth a **** -at distance. No way..
Little realities like ES, or the assumed seating & primer, would force me to start all over..
I do swap around -some, but I run a ladder with each combination to find a clear window, before investing great efforts into load development with it.
The tail chasing has to atleast have direction(clockwise, or counterclockwise)!
How much is a brazilian, anyway?