6 Lbs 10, is a bit, er, for lack of a better term, "Rubenesque" for a 16, don't 'cha think? 1 1/8th oz is a big 16 gauge load, but, how many do you get to shoot in the course of a day?
My two 12s weigh about 6 and the other weighs 6lbs 10ozs-but, it is a 3" with 28" tubes.
That said, the RBL seems to have been mostly a success. Hard to find anything to compare it to in that price range. The people who had problems complained often and, loudly, here and at a few other sites. I'm thinking they were the exception, and not the rule.
Best,
Ted