Hi
I have seen these rifles here in Sweden. The ones I have seen at the range shot well, but I cannot judge how strong the action is.
In general however, the Germans do not make rifles without an adequate safety margin. Also, government standards are quite demanding. I don't think you have the safety margin of a Rem 700, but unless you have gone way over the top I would think that you are OK.
I have the manual you want, but it is in German. However, there are so many pictures that it would still be useful for you to have.
If you want the manual, send me an email (look at my profile or send me a private message with your email) and I can email it to you.
Note that the manual is about 2meg so make sure your email can receive this.
John