Hey there Chuck... I forgot to add, and this is just me, but I do most of my testing right at 40 yards. Occassionally, I'll let one rip at 30, but only after I've decided what round I'm going to stay with. If it won't perform at 40, I'm not wasting my time on that load.

For starters, I'll fire one round at 10 yards. The reason here is to be sure that my gun is hitting point of aim. Make sight adjustments if need be, then move right out to 40 yards with a 30" target. I'll experiment with chokes and different shells at 40 until I have a pattern that makes a turkey target say Uncle, and then, just for fun, I'll hammer a 30 yard target.

There's really nothing wrong with shooting paper at 20, 25, 30, and so on, and I can see the benefit too. Once you have your load dialed in, shooting these ranges will let you know for sure where your pattern is when sending the payload scorching toward the gobblers cranium.