Re: Duracoat ?
you are reducing the bolt to action body clearance. This may be ok in a loose fitting factory action but not recommended for tighter custom actions. I'd suggest only coating the outside of the action and not coating the bolt so as to maintain clearance. On the other hand if you do paint the inside/bolt, then paint will get rubbed off where needed for function as you work/use the bolt. Instead of paint, I plan to have my bolts nitrided: a surface hardening that turns it black. I cerakote the action body, but not the inside raceways.