My 16ga is a little heavy, it has 29" barrels, POW stock and semi beaver forend, its just over 7 lbs.
I could see an english stock and splinter forend coming in close to a pound lighter.
My 28ga is right at 6lbs.
Mine are Zeus models, the Venus model is supposed to be lighter.

I know someone that ordered a 16ga Zeus, he got them to weigh the stock blanks he had to choose from, and he picked the lightest one.
His gun is set up like mine and his comes in right at 6 lbs.

My wife lets me buy all the guns I can hide.