Yes, i is a bit odd, that the barrels are german made. They are marked: " Prima Gewehr Lauf Stahl Fried Krupp Essen" Meaning something like " Superior barrel steel" and it is made in the big German steelcity of Essen. In the following years the dident make a lot of steel for civil use in Essen, i guess! Accutaly,I have seen a Purdey sle gun, with german barrels too. They should be original, and the numbers were matching.
About the weight of the guns. Mine is 6,8 lbs, and my son's is 7 lbs,as KDGJ mentioned. And I agree, the gamegun must not be too heavey. Before I got the beretta i shot a Webley & Scott 20 bore,it is light! 5 lbs 9,6 oz ( im not used to lbs, we use kilos and grammes, and meters and centimeters here) but I think it is right, 2541 grammes. But the extra weight in the beretta is no problem, it handles so well.