I was digging through the Sinclair's catalog last night and found a little section on finding the right bushing size, I don't know how I missed it before
They have it at .001 with turned brass and .002 without turning but using the expander.
I'm using Rem brass in this chamber as it lasts 3x as long and seems to handle the pressure better. I've been turning the necks and I can anneal without any problem, which I should probably do any way to get a little more consistency.
I'm thinking somewhere near .002 should be right, man I hate buying extras but I may have to it seems.
I'm trying to kill a few birds with one stone here, I'm running .004-.006 of run out and I have tracked to the sizing die and expander, I also need to get consistent neck tension, I have played with this and it made a huge difference in POI. I'm thinking that a S die and annealing will go a long ways.
If I reload real careful and get the planets aligned I can shoot groups with under 1/2 MOA of vertical @ 1000yrd but if I feel the neck tension is off and the run out is way out I shoot 2 MOA of vertical. It really sucks, cause I go out to the range knowing what is going to happen just by how the loading went.
If I'm wrong on this correct me.