Resized case length vs fired length

[jdguitars]

I guess I'm not making myself clear. When I set my die so it bottoms out on the shell holder, my case is .020" shorter than the fired case. If noone sets his die the same way, does he get the same amount of setback, that is .020"? I'm just wonderintg if .020" is a reasonable amount to expect. What I am asking is whether I have excerssive headspace in my barrel bolt combination or is this a proper chamber. I don't have headspace gauges for 6.5 grendel. When I resize my fired .308 cases out of my Remington 700 the difference is only .006". That is running the die fully down to the shell holder, not backing the die out so that is all I get.

Thanks,

JD