Thanks guys.

To reiterate: Neck sizing was done to the shoulder. Starting load was at the minimum recommended by VV, and then reduced even farther (by two grains). VV originally recommended 37 gr starting, 40 max. I started at 37, overpressure, recalibrated everything, and reduced to 35. Overpressure and only 1100 fps.

Understood on the bore uniformity issues, stock RWS rounds had no problems. I will go back and hit both those rounds and the Woodleigh bullets with a caliper. I was able to fire rounds provided by another custom vendor who provided Hornady RN bullets, and they fired perfectly (around 1.5 MOA from sitting).