8mm - If you ever doubted that some powders are EXACTLY the same, look at the data for H414 and WW760. Loads and velocities are identical, not just similar. i.e. they are two different names for the SAME powder. Not surprising since Winchester made H414 for Hodgdon.
Or H110 and WW296, Although most of their powders have been made for them, Hodgdon has built an excellent company on selling/promoting others repackaged product.
Their "Extreem" line I believe is produced by ADI of Australia and the ball powders they offer are Winchester.
They now also are the distrubutors for Winchester, and VV powders and recently purchased IMR.