Looks like a Sauer/S&S 9×58–58.5R type, those old German markings (118.35) confuse. Common practice is to form brass from 9.3×72R or long 38-55 cases and fire-form after annealing.
Slug the bore and/or do a chamber cast to confirm bullet diameter and case shape before making brass. Start loads very light (work up with IMR 4198/4895 or similar, watch for pressure signs) and have a gunsmith check headspace if unsure.