Since I have had the opportunity to fondle and caress a real honest to goodness Single Action .30 Carbine, and a TC contender also in that marvelous caliber, I wouldn't consider the cost of a letter from Colt worthwhile.
I do suppose, loaded with 2f it could be manageable, maybe even ..... fun. However on the remote possibility I might accidentally wind up with a factory .30 Carbine round innit. NO FRIGGING WAY!!
Coffinmaker
Bite me, kick me, scratch me, make me write a hot check but I ain't shooting a .30 Carbine again