Take a deprimed fired case for your rifle and drill out the primer hole with a drill just larger than your cleaning rod. Unscrew the tip and slide the hull on the cleaning rod. Go in from the chamber and push the hull into the chamber. It works as a rod guide and keeps the junk out of the action.
There are times when we need to bore sight a rifle and just don't have one of the optical gadgets for the end of the barrel. Just pull out the bolt, slide in your homemade bore guide, and look down the barrel. The bore guide works like the peep on a receiver sight and sharpens up the target and hole in the end off the barrel.
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