Thread: Neck turning

Hi all, reasonably new member here and new to reloading.
can someone say in layman’s terms how necessary neck turning is to produce good rounds or how much affect it makes?
I have bought a rifle with load development done by an experienced reloader, I have used a hornady concentricity tool to check some loads that came with the rifle, they had 1 thou max runout measuring on the scale. my loads are considerably more..
I’m not a great shot by any means but plan to produce good rounds & hopefully improve on shooting.

Cheers,
also if neck turning, what recommended make & model to buy.

Thanks again