My 500 Jeffery weighs 11.25 lbs without scope (12 lbs with). It has two 12 oz mercury recoil reducers installed and the balance is perfect for me. If it was a pound and a half lighter it would be zero fun to shoot, for me at least.
My 500 Jeffery was 9 lbs without scope, not quite 10 lbs with scope. I do not own that rifle anymore...