Wow! Thanks for the complete reply! Even when I'm working from sources published by the component manufacturers, I try to compare the loads from several different sources. Even the Big Boys can make typos. My 11th edition Speer manual has loads listed for the .300 Win mag with 180 grain bullets but someone forgot to print the powder types. I know the max loads are 72.0, 73.0 and 74.0 but it just doesn't say which powder.
Just as a point of interest- my old AR-15 had a 9 inch twist barrel but preferred 55 grainers over the heavier bullets. Go figure.
