I am somewhat new to reloading so I am yet to buy a reloading book (I cannot decide which one to get first). Anyway, I bought a classic lee loader for a few calibers as I enjoy doing it that way rather than a dedicated reloading space with presses, etc. The powder I use for my other calibers (357 magnum and 32-20) is IMR 4227. I have found some load data from the interwebs that show load data for IMR 4227 and 45-70. I am using 32.6 grains and it is producing (according to data, 1550 fps). I have killed a doe with that load last year and was pleased with results. I say all that to say, has anyone ever used, and or currently using this powder for 45-70. The gun I am using this in is a Uberti High Wall with 28" barrel.