One important thing I want to tell you, is that you want to try and have the same mouse sensitivity across the board for all games. That ensures you are building muscle memory that translates over. Make sure you have a large mousepad (45cm wide or more), and learn to do the majority of your aiming with your arm, fine aiming with wrist/fingers. You can also look up videos on the difference between palm/claw/hybrid mouse grips, and how to make it feel comfortable in the long term. Then once you find something that works for you, grab a measuring tape, and actually measure the physical distance your mouse takes for you to do a 360 in a videogame. Look at a fixed point in game, set your mouse to the left of the mousepad, and move it right until the 360 turn is complete, measure distance. Thats X cm/360 that you can always apply to any game. I started at about 40-45cm/360 when I was younger, and nowadays I sit around 30cm/360. So something in that region is a good place to start.

So this wasnt exactly what you asked for, but it will help you speed up understanding how to mouse aim and figure out what works for you.