Yeah, people share their tunes, but I'm inclined to believe it's mostly for nought. Gauges aren't all that accurate. Each gun is also slightly different from the next one. You really need to get a chronograph, and start plotting your power band in relation to what adjustable inputs are available. Run your shot count. Using the data points you can begin to gauge where your gun is happiest. Tune it to an efficient, but powerful range. Then fine tune it for accuracy. Tuning also is literally anything conceivable, from refining the trigger, hammer, changing springs, polishing, changing physical properties, materials, geometry, you name it. It's a pretty big rabbit hole™. Best bet will be to start digging. Use the search feature or simply ask what people have done to whatever gun in specific it is that you want to "tune".
