I ran across a deal on some unfired Lapua 30-06 brass, and I'm going to re-size it to .270 Win, for a good spring project. Is there a preferred method to ensure the neck thickness stays in check?
My current thoughts are:
1)Use my FL bushing sizer die w/ a slightly larger bushing so that the larger OD will compensate for the thicker neck and end up producing the same ID. I'm trying to duplicate the same amount of neck tension of my current load.
2)Then trim the brass and turn the necks to the same thickness of the .270 brass that I have been using.
This makes since in my head but I'm unsure if this is the correct way to do it.
If this will work, about how much thicker will the necks be after being sized down?
I currently use a .302 bushing on brass with .013"-.014" neck thickness.
So maybe order a .303 & .304 bushing??
Feel free to correct me if I have this upside down