I ran the load through Quickload: and its says that you are still safe at 38gr at 2.150" OAL with 40k psi your max is 61931psi for 460mag. Drops considerable in pressure with every .05 of extra length, which tells me that the powder is at its near complete burn point. QL says that it is at 98.86% burn, so H110 is *just* about fully burnt. Now QL is not perfect, but I've got enough experience to say that looking at the graph and the data, I think your loads are too short, or the bullet is seated too deep, or you have something else going on like a mislabeled bullet or powder, or you have mismeasured powder.
The 38gr load should be getting you 1950fps, and i can say that trying to reload magnum cartridges without a chronograph is kinda dangerous.
As for w296/h110, the internet says that its a kaboom factory, Hodgdon has no such warning on their website or product labeling. Many download H110 successfully, and many claim that they can create a SEE at will using the right combination of dance moves.
My .02 = double check your components, measurements and OAL before condemning the H110.