Drill .303 Inch Cadet Pattern

New question about Drill round !
I know the first one is UK for Cadet Forces, but normally it should have the three flutes painted white; but what about the second one ?
Same weight for both of them.


The second one is an original BPD drill round. These were purchased by the UK MoD and modified by having the flutes added and the primers drilled to make them more in keeping with the style of British drill rounds. I believe Conjay Arms Company did the work.


What about the white flutes ?