Shooting smaller steel targets like MOA can help, but if you are not there yet, then use 1.5-2 MOA. Also, a good spotting scope with a spotter can greatly help. Find someone who also enjoys shooting or being at the range and take turns spotting for each other, calling shots, wind, etc. When spotting for other shooters and calling their wind, I always found this as a great training tool to improve my own shooting and to take a break from the prone aches. Even on heavily impacted steel targets at 600, it is fairly easy to see impacts and lead dust clouds on steel, and often with proper lighting, even the bullet in flight just before impact.