I don't know what the figures are, or where the quoted ones came from. But I do know that Kent is one of the few manufacturers that will answer that question with a direct answer if you CALL them. They do not publish their pressures, but seem to understand our need-to-know, and have always been very cooperative. I believe that the big three really don't know what pressures their loads generate beyond being in a certain range between enough pressure to operate an autoloader, and SAAMI max. I think Kent must load to a tighter range of pressure, because they have always given me a specific answer and not a long explanation about how it is difficult to say...