Fede, What is the source of the drawing you show?
Below is a photo of the bullet for the 487C, the loaded 487C cartridge and the 480C cartridge (probably from the same period). Note that the ogive on the 487C bullet. It appears to be much closer to that of the 480C RN bullet (DWM 278G) than it does the bullet in the drawing in Fede’s post. The seperate bullet came from the HP White Lab bullet collection and the box was labeled that it came from a 487C case. I’m sure it is the one illustrated in their book.
appears identical to the 480C.
Below is the illustration of the 487C case from the DWM case list, along with the other cases in the series. The description explains why these rounds are so rare today. Wish John was still on the Forum. He could tell us a lot more about this whole series.
Note that the bullet for these are the 287 bullets listed below. It is interesting that none of these have a boattail, although a number are obviously designed by or for W F Mauser. It is also interesting that none are specifically identified for the 487C case. Bullet 287D, a W F Mauser bullet, has the ogive of the bullet in the drawing Fede posted. I don’t remember having seen a reference to a 487D or 487I case.
The drawing of the 487C case also identifies another bullet, the DWM 402 which is apparently a later design than most of the 287 range. It is titled Pistole Kal 9mm Mauser, and has the boattail of the bullet Fede illustrates but the more standard ogive. This is clearly the bullet in the cartridge illustrated above.
A lot more here than I’m qualified to talk about. This thread needs someone who can discuss the entire scope of this experimental series and understands the history of the guns. It is strange to me that the 487C case shows loaded with a bullet that is apparently not part of the family of W F Mauser experimental bullets.