If I'm seeing that punch right, I think it is a "Cross Patch" punch. Normally, cross patching requires two strips of paper "crossed" over the false muzzle in grooves that orient them perfectly. As the bullet is inserted into the false muzzle, the patch's wings fold up around the sides of the bullets and the whole thing slides down the barrel to seat on the wad over the powder (wads are important!). The paper can be lubed, or not. Benchrest muzzleloaders would soak the paper (often coated or uncoated freezer paper), in sperm whale or mineral oil.
It is a darn cool rifle but I would not call it a smooth rifle if it has spiraled grooves of any type. But semantics are pretty trivial, the rifle is what's important, and that's a beauty.
Brent
![[Linked Image from i.imgur.com]](https://i.imgur.com/qclHjMQ.jpg)
