hogpatrol
Gold $$ Contributor
before you turn necks, regardless what brass you use you need to know the chambers neck exact! dimensions. guessing is not the way to go
If one is going to the expense of buying neck turning equipment and the time doing the work, these tools or of the same type, are a necessity.
https://www.midwayusa.com/product/581575/starrett-vernier-micrometer-1
https://www.midwayusa.com/product/134296/hollands-case-neck-ball-vernier-micrometer