Re: reloading stage that contributes most to accuracy
I use comp seater dies, I haven't had problems with bullet conentricity, if you do how can you fix it?
For me, at long range I think measuring powder has gained me most. I have a large magnifying glass I use to ensure the beam scale pointer lines up exactly on the same spot every time. If it's a fraction off the desired powder charge I don't care too much just so they are all the exact same amount. That's why I trust a beam scale over electronic, I've seen electronic scales drift from one charge to another too much for my liking . I don't think for short range hunting loads it's that big of a deal but long range I think its critical.
I never really thought about neck tension, the smith that built my first comp rig told me what bushing to get and it worked. I hear guys talking about changing it for different reasons. I run .003" on the short mags.