For the OCD handloaders out there, there's a thread at 6.5 Grendel forum about these two theories that deal with internal ballistics (what goes on inside the barrel/chamber when you fire a gun), and there are good links to some lite reading on the matter. Some smarty pants weighs in with pictures, links, and all sorts of convoluted nonsense in an effort to explain why OCW and OBT go together like peanut butter and Nutella. Mmmmmmmmm. . . . .Nutella!
Go check it out!