Any thoughts on powdered graphite, and a tip needed?

[Son]

Has anyone tried powdered graphite as a gun lubricant? I'm thinking perhaps the bolt channel could be de oiled and tried out, I'm all for smooth actions.

... and the muzzle of my trimmed back no1 mk3 barrel has unfortunately proved vulnerable to getting a ding right on the edge of a land. Some protection is going to be needed, has anyone devised a home made device? I'm thinking something T shaped that rests in the barrel, but can be found around the house, maybe a bolt with a wide washer and the thread covered with a section of plastic tube in about 303 diameter.

I oil my actions and wipe them as dry as possible for shooting. Personally, I wouldn't use graphite there, I don't know of any that recommend it on actions either.

As for your crown, don't stick anything down the barrel. It's been "trimmed back" already- get it re-crowned and look after it. The crown should have the rifling back below the level of the muzzle end, and should not be easily damaged.