L.Brown is correct, as long as we"old farts" are in the game, we remember the days that psi referred to cup or lup.We understand now that when the old data shows a load generates 50,000 psi(in cup), it would be more like 60,000 psi(pe).When an heir looks at the data to load ammo for one of the rifles we willed them, and see it "only" generates 50,000"psi",I hope they don't add more powder to the "old weak load" to bring it up to the "modern"60,ooo psi.It's complicated enough to explain it to us,imagine explaining it to someone that never lived without electronics and thinks the 10 commandments were written on a kindle.
Mike
