Lyman 49th shows a max of 4.2 grains of Win 231.
Hornady 7th shows a max of 3.5 grains of Win 231.
Speer #14 shows a max of 3.3 grains of Win 231.
Hodgdon shows a max of 4.0 grains of Win 231.
These four current sources, averaged, are 3.8 grains of Win 231. I think what you are doing is unsafe, and I am posting this time primarily for other readers of this thread, so someone doesn't think it's a good idea to copy you. Going off of 33 year old data, when there is current data from the same company that categorically obsoletes their previous data, is a recipe for disaster. People reading should be fully informed that you are well beyond current and accepted loading data.