How do you coat a barrel that you can only access from the muzzle?
Like a muzzle loader?
I'd remove the breech plug.
DF
Like a M1 Garand. Empty case sounds good, but a fail. Won't seal against the thin liquid that is DBC.
Doesn't need to seal, it just needs to prevent the majority from entering the chamber. A little bit in there won't hurt at all. I've done it many times and never an issue.
