Hi Darwyn;
I have a White Mountain Carbine. It is a carbine. The barrel is about 21", which is pretty short for a frontstuffer. It's light. It has a very nice recoil pad, which although not in keeping with the original historical frontstuffers, is necessary for taming the recoil with one this light!
All in all, this rifle, and all the T/C's are quality made, if not historically accurate rifles. They do have an excellent warranty, which they seem to honor even for those who aren't the original buyers.
As best I can measure it, I think my rifle has a 1 in 32 twist. It's certainly faster than the common 1 in 48. This twist is absolutely designed for Maxiballs. Other conicals, such as the Hornady PA conical at 240 grains, also shoot very well.
I've had good results with roundball, but you can't load them any more than 65 or 70 grains or the lead strips and accuracy falls apart.
All in all, the positives of the T/C White Mountain carbine are the T/C warranty, it's handiness and lightness...particularly for a smaller person.
The negative is that it's not really historically correct at all. Also, the short barrrel takes away from the sight radius.
All of this said, the two Whitetail Deer that I harvested with mine didn't care for this rifle at all!
If I can tell you anything else, feel free to email me off group at sally@lcsys.net.
Oh, I wouldn't mind selling mine for about $225, with fiber optic sights and an unbreakable rod if anyone would be interested. I'm into the historically correct rifles now and I don't shoot it anymore.
Regards to all,
Jerry.