I bet if you went to any yard and checked saddles there would be plenty that don't fit.
That would be a better study, but I still don't think it would give a % of bodyweight figure, simply because I think a % of bodyweight is a meaningless guide. Again going back to mine as I know him (and rounding up to 400kg for ease/laziness lol), a 400kg 14.2 welsh D has a very different weight carrying ability to a 400kg 16hh tb. Now according to those quoting 10% you'd be looking at a weight of just over 6 stone - I don't know how they'd fair on the imaginary tb, but God help them on my cob if they go faster than a walk (and if they stayed in walk he'd probably go for a graze ), also most riders that weight are children & while he's fine as an occasional child's ride he isn't really a child's pony. Up it to 15% we're getting 9.4 stone all in, which he'd find very easy but would probably be getting close to the limit of what I'd want on the fictional tb. At 20% and 12.6 stone my cob is still laughing & acting the fool while I would have said too heavy for the tb & not allowed the rider on. However if any of these weights had been unbalanced my cob would have quickly looked lame.
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