Thanks to all of you who replied.
I had a chance to shoot my reloads Thursday. (SMK 168 BTHP, A4064 46.8gn)
They grouped much better than the Greek CMP ammo I'd been shooting. And likely within my ability to hold a consistent sight picture.
The couple fliers I had were on shots that I knew I'd blown.
Attached screenshot from my SOLO etarget. The grid squares are 1 moa. The green + is mean poi. Shot for group only, with same zero as used for the Greek ammo. Now I just need to practice... and as @ChuckS said "go worry about something else"