Be careful whose data you go by in reloading. Harvey Donaldson was fanatical in proving that his creation would out perform the .220 Swift and some of his loads are highly suspect, especially when used in a rifle like a High Wall.
I met Harvey once at a bench rest match in Johnstown, NY, and he was a character. I was listening to a group of shooters talk when Harvey walked up. One of them asked Harvey, "Do you know what I'm shooting? An Improved Donaldson Wasp." Harvey exploded, "You can't improve a Donaldson Wasp!", provoking a gale of laughter from the group.
