If you’re randomly dropping shots and don’t know why that’s where you should start. I’d work on pure marksmanship skills since that’s a problem you’ve identified and GSSF is just essentially bullseye shooting on the clock.
Learn the amount of visual focus and trigger control you need to make hits at the various distances involved in GSSF. At first just practice being able to hit the things.
Once you can hit them reliably without any pressure then add a time element and work in acquiring that visual focus faster and controlling the trigger under match type pressure.
Then practice transitioning between targets of varying difficulty on demand. The physical act of transitioning your gun between targets is not as important as transitioning between the different amounts of visual focus and trigger control needed for shots of varying difficulty.
That’s really it. GSSF is just hitting the things with a clock running and some of the things are smaller than others.
