how far is too far?

[Roundsworth]

Every now and then, I run into a situation like yours. I may have an antique rifle torn down to the last 1 or 2 components and run into an issue, such as parts being staked in, etc. I use dental picks, toothpicks, pipe cleaners, and lotsa Hoppe's No.9 solvent to loosen up the crud. My little air compressor is set at 120 PSI and does a fine job of blowing the loosened gunk out. Quite often, I have to repeat the process, but feel that the payoff is worth it by not boogering up screws or grinding flared or staked parts. Brass bristled tooth brushes and bronze wool are great for removing filth without damaging any remaining finish (bluing or CC) OR nicely aged patina. Good luck!