Just checked Hodgdon's online data for the 264 Win and H1000. It shows 60.4gr with a 130gr bullet and 58.5gr with a 140gr. Both were roughly 62k psi.
Here's your problem: That's not just a "140 grain bullet" in Hodgdon's chart, it's a Nosler Partition. The 130 is the conventional Accubond. I'm pretty sure Pat's not shooting Partitions (or Accubonds) and if you compare the bullets he's shooting to a Partition side-by side, you'll see the Partition's bearing surface is a lot longer, as is the Accubond's.
If you look at Berger's data for their 140's, they don't show H-1000 but for the powders they do show, their upper limit exceeds the Hodgdon data by a good bit in every case. For example, Hodgdon shows Retumbo's max at 63.5 grains with the 140 NP, and Berger shows 68.5 grains with their 140's. So the Hodgdon data do not seem very applicable.
Ooops, Edited to add, just saw that Wyoming already covered this, but I'll leave it up for the Retumbo data from Berger.
