Just did some re-testing today. I found the .40 longrifle prefers LHV and 65gr. of 3F again - maybe due to the colder weather, while the .50 Canoe gun prefers Hoppe's #9Plus. Big change in POI when changing lubes, especially in the short 21" .50 barrel.
During the warmer weather, the rifle preferred 55gr. 2F and spit. Go figure!