To determine which is significantly more accurate of two loads which is better:
One 20 shot group, or
Two 10 shot groups, or
Four 5 shot groups?
I know more is better (sometimes), 100 shots, however you bunch them, is better than 20, but there comes a point of dimensioning returns when it comes to hunting or plinking loads.
Lifetime NRA since 1956, NRA Benefactor, USN Member, CBA Member