Being new to reloading, I'm wondering if what I am seeing is "normal". I settled on a combination to try for my .30-06 of Lake City Match brass, Gold Medal 210 primers, Hornady ELD-Match 225, and RL-22. I did a test with charge weights from 52.0 gr to 56.5 gr in 0.5 gr increments. Loaded three of each. Test conducted at 100 yards off a bench with bipod and sqeezebag. All but two were under MOA, but two groups in particular caught my eye. The first good group was just a touch over a quarter inch with a charge of 53 gr. The second was just under 3/8" with a charge weight of 55.5 gr. My question is, when testing a range of charge weights is it normal to have two "nodes" where the grouping is good?
I'm a fairly experienced shooter, but when it comes to reloading, I'm at "FNG" level.