I always say hi when I pass by the old shop. I actually don't have a Hawken rifle for myself. That doesn't seem right for a St. Louis guy. It's just that I like flintlocks the best, and, you know.....
I sometimes polish parts and locks for builders in exchange for stuff. But that's when I'm not busy and right now I'm working on the tuition series of rifles. Daughter going to grad school.
Back to your question, I've seen a lot of variety in roughness/smoothness of brass castings but not iron/steel castings.