My brother used to do 150kg, don't know what that is in lbs. And that was 3 sets of 5-10.
I can do 60kg, yes I'm a pussy, at 3 sets of 5-10. However I am a skinny little fuck and I only weigh 65kg.
Again I don't know how many lbs that is. I think I weigh about 10 stone which times 14 = 140. So maybe that's it.