Tight velocity nodes (low es,sd) don't necessarily coincide with small group sizes, especially at close range(under 300 yards). Bullet/powder type and charge weight and seating depth are big factors. Bigger accuracy issues are the barrel quality and the shooter(type of support,bags, bipod). Smaller factors, neck tension, brass quality/prep and primer brand. Wind is an issue for group size and load development analysis. You must use flags, read wind to shoot tight groups. Your load(if my rifle) shows a bit too much vertical dispersion and the horizontal dispersion could be wind effects. 2 things I would address thru load development testing. Be honest with you skills and capabilities of the equipment as a whole system. Optics can be a problem, I do load development with a 20x scope with 0.25 moa dot on hunting rifles. But I have no problem duplicating groups with 9-12x top end magnification at 100-200 yards.
