How about something permanent that doesn't require specialized tools (like bead blasting equip)? I was thinking about sandpaper. Just not sure what kind and grit.
I'm not sure where in Wyoming you are living (you lucky dog). But, any small or large welding shop or machine shop will have a bead blast cabinet handy. I found a welder/fabricator down here in Colorado that bead blasted my Lone Wolf barrel for $5.00.
If you can find "the guy", as my New Yorker friend always says, they usually will do it for next to nothing. - Sometimes just a six pack.