Shoot 'em and toss that brass.

Reloading dies come in a WIDE variety of sizes. Almost ALL will size the brass down too much if you adjust to the max, and they are supposed to. Proper headspace falls within certain specifications therefore any chamber at maximum spec but still within spec should have a longer case than a minimum spec chamber. Your resizing die is designed to be able to size down slightly past the minimum chamber spec. The amount "slightly past" is up to the die manufacturer. This would be a properly made die, and lots are out of spec. Remember, brass springs back at different rates so the die must be able to size fairly hard brass which requires more sizing than fresh or new brass.

As mentioned, lubed brass or a lubed chamber can cause increased bolt thrust. Excessive amounts can alter the chamber air space or get ahead of the bullet and this will increase chamber pressure.