Agreed. One also has to take into consideration the bore diameter of the gasket. Summits website has the compressed volume listed. At some point you are just splitting hairs. DODGE 5.2L/318 MOPAR SMALL BLOCK LA Head Gaskets
You know, now that you mention it, I can't remember that anyone ever measured a stock steel shim headgasket for bore size. I have no idea how big they were.