2.5 - 3.5 lbs is about right for me. It comes down to simple questions....will I carry the rifle loaded? Does the safety lock up the striker or the trigger? Can I see/test it is absolutely working? Do I have a concern the mechanism will be solely responsible for safety, or are there parallel safety mechanisms?
For example, Win 70's lift the striker off the sear and lock it. If the safety fails, the sear catches it. You can see the safety is working because the striker is held back a bit.
On a rig appropriate for this forums purpose, I'm running 12 oz. I know the safety is rock solid and everything has locktite. I wouldn't be comfortable with factory or a used rifle until I checked it out.