If you haven't found what you are after yet this is what I found from Cartridges of the World:
M61 AP
41gn IMR 4475 or
46gn WC846
Thanks to browningautorifle for the lead as I was after standard Ball powder type and load and it is there as well.
If you haven't found what you are after yet this is what I found from Cartridges of the World:
M61 AP
41gn IMR 4475 or
46gn WC846
Thanks to browningautorifle for the lead as I was after standard Ball powder type and load and it is there as well.