Marrakai,

I was actually waiting for your comments!

Yes I have Ellis Brown's book, and he mentions that German proof rules state that a 10% increase in bullet weight on top of a standard load could be used to proove a gun. I will propably stick to it.

I am also thinking of shooting a barrel with a primed case on the other barrel to check for "doubling" during the tests. But someone mentioned to me that proofing should be done with both barrels being shot one after the other and only then should the gun be examined. What is the correct procedure?

Fred