David -
From my experience, Dave's weight is right on the money. Dave is now 78 years of age and can't/won't currently build a bow heavier than 50# @ 28". His tillering process requires the he draw he bow numerous times and 50# is the maximum he physically can draw. I've seen those posts too about them being 5# heavier than marked. I have a Hill Tembo that is 66" 55# @28" and when compared to my Johnson that is 50# @ 28" the Tembow is NOTICEABLY heavier than the Johnson. So, unless a person can show me the difference on a calibrated and certified scale, IMHO, their claims do not hold water. My experience has shown these hand scales only "ballpark" the weight. But, that's my $0.02 on the subject.