Ok, I checked what y'all suggested,don't know why I didn't think of it, but a bullet will not go in a fired case at all pushing it by hand. It appears that the measurement of a fired case and a loaded case are the same. And a sized case is about .003-.004 smaller than either.
I am set up to turn necks but I don't like to do it. Looks like I'm going to have to here though
I reckon being the loaded and fired case both have the same measurements, the brass has nowhere to go when it expands on firing. And I am getting high pressures with less than max loads. I was attributing it to the heat, it's in the high 90s every day.