Win 231 and Titegroup are Ball powders. They have just been rolled flat to change the geometry and get the burning rate wanted. But the manufacturing process is Olin-Winchester Ball Powder.
News to me. But if it ain't round any more, is it still a "ball" powder?
Ball powders metering consistency is in the 0.1 grain range, at least for me. Flake powders around 0.3, and stick, well 0.5 to 1.0. I have used W231, have about 3 pounds left to reload, the stuff looks really flakey to me, but I don't remember the metering consistency.