Nope, not worn, the rifling is till very sharp, and very clear. But it does not have the hexagonal rifling that the Whitworth rifles had.
This has a "newer" version of the rifling, a member on another forum said that this rifle has the Westley Richards version of the Whiteworth rifling.
It's still in very good condition, and I will be shooting it for the first time on Saturday. I've been playing around with paper patching, and I feel that I have it working good now.