Watch the wind indicator at the top of your scope and adjust your aim left or right accordingly.
Search for and download the free version (or the Gold version to support the developer). Step 2: Acquire the Game File (ISO)
This is the number one advantage of over original hardware. Use Save States (Shift + F1) before every long shot.
Enlarge the 'R' button (Shoot) and 'L' button (Aim/Scope) and move them to the top corners for a comfortable four-finger "claw" grip.