You aren't prying! He's 6',weighs 240 lbs, and has a big bum. He truly fits a 19" seat. I just sent an email to Horse Saddle Shop about Tuckers, they seem very knowledgeable about fitting, and Tucker makes an 18 1/2". I also asked them if they have a semi-QH tree with a Wade or A-Fork. Wishing ourselves good luck! Posted via Mobile Device
Take him to a tack shop and have him sit on the saddles there, I am almost willing to bet money he doesn't need a 19" seat with that height and weight. 17 1/2 or 18 at the VERY outside, I'll almost bet money.
Not every saddle measures/fits the same. Tuckers run very small and a deep seat will fit one way and a flatter seat will fit another. My husband is about your hubby's size and he rides in a 17" roper very comfortably.
Did that, and he fits a 19". He sits on top of the cantle on anything smaller. We had one for him that was perfect, but too big for the horse. Tucker also makes several saddles with lower cantles longer seats, one of them is made for larger riders. I just can't remember which one, so I emailed them. Thanks, though! Posted via Mobile Device