I've been quite happy with the accuracy of a full-length .30-40 issue rifle and wouldn't mind owning a "sporterized" version for tin can and milk jug work.
Don't expect to ever be wealthy enough to own a real Krag carbine but maybe I would spring for a cut-down. Assuming the bore is good, what sort of groups could a person expect to shoot with one of these whose barrel has been cut to 22"?