Haven't used it but apparently it is just a low-grade (as far as energy release, compared to Schutzen or Swiss) real black powder with a rather inconsistent granule size. Might be OK for launching smaller shot loads at reasonable velocities, or may be even better for low recoil loads...
From the midway site description (worth going to look at for the comments/questions)
"Goex Reenactor Black Powder is dedicated to and manufactured for the historical reenactor and the value-conscious black powder recreational shooter. Loading by volume charge as regular-grade black powder, this product is ideal for blank fire in Muskets, Carbines, Pistols and Cannon.
However, it is also suitable for loading in recreational round ball muzzleloaders, where it performs nicely at low pressures. With 100% black powder ignition, it is very reliable with every shot. Reenactor Gunpowder is value priced for every budget minded shooter pursuing living history."
