Chris - It's a Bullberry set Fred made special for me from his personal private stash of exhibition wood to commemorate this being the first Hummer test barrel. Set is Spalted Curly Oak with Rosewood caps, and the set is as heavy as a 1949 Mercury Monterey Lead Sled. Even offhand it hangsvery solidly and the crosshairs don't budge at the shot even with my centerfire 17 wildcats. You'll get there on the scopes once you actually get some barrels (11 = kiddie cruiser
) and you'll have backups. I think I always had about 12-15 backup scopes (probably 30 or more now that I have been selling barrels). Have had four SSK 375JDJ's, all 14", and they were my all time favorite Contender barrels. Don't know if I'd want one in carbine length though... just too much fun as a pistol.
NGH - FWIW, all the carbine barrels Bullberry made for me the last 15 years have been 20". Fred (and I agree) considers the 20" to be about the optimum barrel length for most calibers on the Contenders due to its very slow lock time. As you've already determined, the short action of the TC's gives you a very short carbine even with 20"/21" barrels and they work well in heavy brush.
Any competent gunsmith or machinnist ought to be able to chop and recrown a barrel in short order for you... doesn't have to be a TC barrel shop.