you have to read - its all in the headline. usual opinion about the africa model is that it was a long barrel rifle only because of the sight line before 1914 when scopes where not possible or to delicate for a safari.
this had some after effects into the 1930s, maybe because the rifles looking so nice or people where still believing they need the long barrels because it was so 20 years ago.
anyway, this concept was gone after the second war and I think it was outdated in the 1920s.
this impressive pattern of the mauser factory was copied in france

the original african model (70 cm barrel )

the french Rival mauser (72 cm barrel)

and as we see here also by Suhl gunmaker like Kettner. the cartridges were probably the usual suspects, 10,75x68, 9,3x62, 8x64, 7x64, I only have this page