HOW-WHAT-WHERE AND WHEN ??
These are basic questions that I ask myself and the most important input is that I listen to the firearm and it tells me what it needs. I shoot just about everything that is legal, including M/L's.
One that is often forgotten, is your CCW. Most of the time it's just dusty but dust can draw moisture. A good example, is your hand-tools. They sit, collect dust, draw moisture and you see stuff that turns out to be rust. I liken it to a routine doctor's check-up.. ....
Be Safe !!!