I use a Wilson adjustable headspace gauge for my belted cases. No measurements are needed.
Take a 1x fired case (or a 2x fired case if it still chambers easily after neck sizing only) and drop it into the gauge and adjust it so it fits. The case will be headspaced on the shoulder. Tighten up the adjustment screw.
Now you have a template of your chamber (Close enough because of spring back).
Adjust your body die by testing brass fit in the Wilson gauge that you adjusted so the brass headspace on the shoulder.
I NK size then FL size in that order. I anneal after 3 firings. Belted brass will last as non belted this way.
Faith and love of others knows no mileage nor bounds. That's simply the way it is.
dogzapper
After the game is over, the king and the pawn go into the same box.
Italian Proverb
| 
