For those interested in the H110/296 issue, go to the entry page for the
Hodgdon load data site and scroll down through the warning under the enter link. You'll find it about 2/3 of the way down. The thing to keep in mind is this powder is useful because it gets to magnum velocities with lower pressures than most others do. The penalty is that same lower pressure does not sustain burning as easily as is desirable. Loading it down further lowers the pressure further and the burning reliability goes south.