Sorry but I don't get this that the Mauser 93 cannot be made into a lovely sporting/hunting rifle. Mauser and DWM did this when they were still new as can be seen here:-

As you can see a typical late 19th century sporting rifle. Reinforced panels to the stock, small Germanic cheek piece, schnable tip to fore stock and octagonal barrel profile. All it really lacks is a nice hunting aperture sight. This rifle is a DWM Plezier made for the Boers in about 1897.