Well, since I already work with H4895 and have a significant amount on hand, what would be the advantage, or disadvantage of the H over IMR?  I could load up some rounds with the 34 grains of H4895 and see how it compares to my current load.  I'm betting the barrel would be much easier to clean!  FWIW, I do think H4895 is a little more uniform and meters a little better than IMR 4895 (yes, I used to use it).