Rebel, I bought a 16 gauge 1912 Flues 3E a while back. Mine is a couple oz heavier than yours because of the 28" barrels. I thought the light Krupp steel barrels seemed pretty thin walled so I posted asking about their suitability for low pressure loads. I got some good replies. Here is a link to the thread.
http://www.doublegunshop.com/forums/ubbt...1411#Post241411