I think it it feels like a lot of neck tension you have a pile. Maybe measure the necks on your Norma ammo and your sized cases for an idea of where you’re at.
I agree that Barnes equals 50 thou or better.
Sometimes, but not all the time. My 7mm08 is an example. It likes .025" off. I did not see a change for the better to equal the accuracy until I was .100" off.. Then it was very minimal and the .025" off load was more consistent.. Every rifle is different though.
