Ok so when I reload, I will have to
1) use body die
Then
2) use the neck die
Then
3) seat bullet
why do I put the neck bushing in the body die at all then?
and the brass has a neck thickness of .0158 so what I did was
.0158+.0158+.308= .3396
So I did
.3396-.002=.3376
.3396-.001=.3386
so I picked up the .337 and .338 bushings
using ADG brass
What you have is a three die set, a seater, bushing neck die, and a body die! First on your neck die it should have come with an expander ball and a mandrel? Mine all did. Don't use the ball! Use the mandrel. It will give you the best results! First loading just neck it, load and shoot.
The bushing is only for the neck die, nothing else.
The body die is to size the body and bump the shoulder.
So loading your 1xfired, if you use Redding comp inserts great, screw the body die down onto the .010 insert with the ram raised, lower the ram turn the die 1/8th and lock it. You should now have a slight camover. Measure the brass before sizing (head space gauge). You are looking for a .002 set back or what ever you like. If you don't get that change to the next insert, .008, and size. Continue until you achieve your set back.
Now if you don't use those inserts the the set up is a little different. Raise the ram screw the die down till it touches the back it off a 1/4 turn, the size and check the head space.
So the way I attack is tumble and clean, anneal, cool, lube, body size, neck and de-cap, trim and back in the tumbler to clean off the lube. Pull it out brush the necks, prime, powder, and seat.
Hope this helps?