Alf,
Worse, it's pre-1916.
The original P08 bullet had this truncated cone design. It was changed over to the ogival shape somewhere in 1916. The trommel magazines had feeding problems with the flat nose design.
The conical round on the right is from 1917.
This image shows the headstamps of both rounds, made by DWM:
Left: The flat nose, 1915.
Right: The conical version, 1917.
