Oil inside a 64 action for storage/rustproof only. If there's oil there while in use, they gum up very quickly. I run mine completely dry, some folks have reported success with dry lubes.
To really enjoy a 64 get used to take down n' clean every 500-1000 rds. I have had luck just hosing the action with brake cleaner, while hand cycling 'til it flows clear, but it's only to extend the deep clean.
Don't twist your barrel out of the action, a broken ejector is the reward. If the barrel seems stuck, it can be freed from the action using the bolt.