Hodgdon powders are difficult to catalog. The reason being that Hodgdon never manufactured any powders. They simply would contact a manufacturer and tell them they wanted so much of a powder, and then would re-pack it.
That is why when you look at different Hodgdon labels you will see that at one time a powder was made in America, and the next batch would be Sweden, and then Australia, and then Canada.
The only consistant manufacturer was Olin, who was the only manufacturer of ball powders in the world, and managed to maintain that status.
However, now that Hodgdon owns the manufacturing plants and rights to IMR and WW powders, I am sure that they will stop buying from ADI and ATK.
I understand that the IMR powders are now shipping in the black Hodgdon containers (which is a good thing), and that shortly where there are powders that have both the IMR and the H prefix, they will start shipping only the stuff made at the old DuPont/IMR plants. I am not sure if they will be labeled IMR or Hodgdon, but I am pretty sure that there will not be both available. I understand that 4227 is now a single product.
This conversion process is bound to cause some difficulty...what Hodgdon should do is rename all the "dual named" powders the same way Ball C was renamed...H-4227(2), H-4350(2), etc.
HP-38 is W-231
HS-6 is W-540
HS-7 is W-571
H-110 is W-296
BL(C)-2 is W-748
H-414 is W-760
To tell the truth, I thought that Hodgdon should have jumped on both Alliant and Accurate when they decided to sell.