I'll bring my scale w/ me and weigh it this weekend. I'm almost positive it did not weigh near 100 lbs as I have a bad back and would never be able to lift if off and tip it up in the air to empty it if it weighed that much. I doubt it even weighed 75lbs. I can only assume that the issue w/ the equations used is that the grass is not getting packed in the bagger fully. It never really packs fully, maybe 80%. If you stopped every few minutes and removed it and tipped it up on end to pack it, it would definatly weigh more, but that would be a waste of time and energy. If your going to stop and lift it off, might as well dump it then. I'll post on Monday w/ the weight.
05 Exmark Metro HP 48" w/
Proslide XT & Accelerator XL 6.2 bagger
Murray 21" push
12x6 Enclosed Trailer
88 Chevy w/ 8 ft. bed