I have the same gun as the OP and no model #s on these " voere vohrenbach made in Germany " and the cal is all it has ,some called it the poor mans weatherby , apparently the same guy was involved in designing the mark VVohrenbach is not a model...that is the city where it was built. ( Voere has two plants: Vohrenbach and Kufstein in Austria) To get further, look for the model number on your rifle, it should show "Model 2145" or "Model 2250" or something like that...Voere always named their rifles with a 4 digit number.
I'd send an email to: office@voere.at ,they even have spare parts for their 70 year old guns...but find out your model first.If you don't find it on the rifle, go to www.voere.com , switch site to english (starts out in german) and go trough their model list and visually identify what you got.
CG
I would look for another rifle of the same model, buy it, and then use the same bolt in both rifles. Most likely the headspace would be within tolerance, but if not then you could have the barrel turned in and rechambered to correct that.
Either that, or sell it bto someone who want to do the same.
I have a friend up here who lost the bolt for his SAKO 338 Win Mag years ago. The easiest solution was to get another one in 7mm Rem Mag, and have two nice rifles and be happy.
Ted