I also have an unproofed 8x57mm rifle. It is a WWI Kar.98a that was sporterized probably between wars. All markings have been scrubbed including serial numbers. It was fitted to a Suhl style stock with pancaked cheek piece. A previous owner poorly fitted an Oberdorf style magazine release and I added a period Hensholdt Wexlar scope using detachable mounts made by Recknagle. I also added a triple leaf express rear sight and ramp front sight. With proper handloads it will. at 100 yards, put five rounds into a group that I can cover with a 50 cent piece.

Vlad