Wilhelm k. Förster = Foerster called himself „Königlicher Hofbüchsenmacher“ = gunmaker to a Royal Court (which one?). He founded his business at Taubenstrasse 47, Berlin W 8 in 1861. By 1925 the business was run by a Paul Schmidt. It would be interesting to know about the proofmarks and numbers under barrel and receiver. Knowing them may allow closer dating of the rifle.
Already posted another pre-WW1 W. Foerster rifle in 9.3x62 some years ago. Foerster’s serial number is 9753. It was built on a Mauser, Oberndorf, commercial action number 22064, which dates the action to 1907 – 08.