I wanted to load some sub-sonic rounds for my 300 black out, and found some load data for IMR Trail Boss. When I tried to purchase some of this powder I was told it's now made by Hogdon, And the sales person brought out a can of it to show me. This seems very strange to me that one company would stop making a powder, and another would start making one named the same. Are these two manufactures powders the same, and can I use the load data from the IMR powder for the Hogdon?