I bought a bundle of rubber stoppers off of amazon prime, they will get the job done in the acid bath no problem as they go in at room temperature. However I was not going to plug the bores during the normal distilled water boil after the rusting, I didn't think it was necessary as I would dry out bores with a patch each time. Also I am doubtful that the plugs will hold as the temperature rises inside the barrels, they will pop off due to the expanding hot air. I though about venting them somehow with a pipe or something protruding through the rubber stopper.
Brian, I did a quick search for Oscar's letters but did not find anything right away. Could you send me in a direction? Thanks in advance.
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