once all derbies is removed it would be looser than if it were packed with dirt.
What are derbies and how do they get inside your gun?
once all derbies is removed it would be looser than if it were packed with dirt.
I'd think the brutal forces of firing said weapons would do FAR more to induce wear/slop than a human (relatively) gently removing the parts and reassembling.
That is unless you are cleaning your parts with emory cloth.
I always clean a gun and lube a gun before I sell it. I also always take-down and clean a gun I bought whether it's factory new or previously owned. That way I can make sure I know it's clean, has no foreign material in the works or barrel, and it's ready to fire safely. It also lets me closely inspect all the parts for wear or damage.