Over the years I have ended up with a few custom rifles with no cartridge designation on the barrel. While no problems have resulted thus far, I'm not getting any younger and I want to mark them correctly. I was considering just a Sharpie, but thought I'd poll the forum geniuses for other methods. I've seen kits with all 26 letter + numbers on punches, but am concerned that would look bad doing it freehand.

Thoughts?