Lagopus, that Greenbat powder was loaded in England.
I immigrated to Canada in 1976. Yes, it was the purple powder with big granules, Greenwood and Batley,looked like laundry detergent. They made 303 ammunition by the million for the UK Government. GB on the headstamp
I will try these FWs in a Belgian SLNE I have and report back.I hope to make Flatwater next yeat Larry, and I'll try some of these Midway shells, Larry.
I'll also load up some light loads in 2 3/4" Federal Gold Medal paper hulls and try those. The Evans is of 1927 vintage so I'll try it and report back.
Mikey