Shrug. Just because drill sergeants yell about leaving any tiny speck of "dark matter" anywhere on a firearm doesn't mean that it's really that important. I prefer "combat" handguns that are service revolvers or service pistols designed specifically to function under adverse conditions. If the front of the cylinder is slightly less than pristine, or there is a tiny piece of fouling inside of a single groove of the rifling, it doesn't matter.
If it makes my FiL happy to spend 20 minutes cleaning each handgun until it is 100% spotless, more power to him. I spend five minutes getting it to 95%, and the difference in function is non-existent. Different strokes for different folks.