I think it depends on what your type of shooting is. I set my at 24, 32, 40, 48, 55yds. Those gaps give me the best ability to miss a yardage judgement, and still take home a deer. A lot of guys like 20, 30, 40, 50, 60, but I'm only shooting around 270fps, so I tightened my gaps a little. As for shooting to 70yds with a 3 pin sight set at 20, 30, 40, MOST guys aren't that good, because your dealing with about about 5 FEET of drop between 40 and 70 yds even shooting 300FPS!!! [:-]