Nuttin' to it Mossy. Get yourself a big piece of paper, or cardboard, 30"x30" or so. I use "contractor's paper" from Home Depot or Lowe's which usually costs about $10 or so a roll. I do a good bit of patterning, and it lasts me quite a while. Measure off your 40 yd mark and fire away. I have a range at my house and have distances staked off so I'm not always measuring. After you shoot and retrieve your paper, find the core/densest part of your pattern. This is not necessarily where you were aiming, and for me it usually isn't. I've had to put sights on everything I've got. Mark the center of what you find to be the densest part of the pattern. Just a small X or a dot will do. Then just draw yourself a 10" circle around your center point. A nail, a pencil, and a 5" piece of string will do. I use a piece of 10" plexiglass I purchased from eBay. It is ideal for that, although I can't take credit for the idea, came from another OG member. It works well because you can put it down on your pattern and move it around to cover the densest part without ever losing sight of those holes. Then you just count those little suckers. You can divide your circle into quadrants if you want, makes it less likely to lose count. Once you do all that, and actually know where the core of your pattern is, then you can adjust your sights for POI. The big piece of paper is critical. You might shoot an 8x11" turkey target and get a killing or decent pattern. Problem might be your paper isn't large enough to show you the big picture and the actual core of your pattern that may be missing the turkeys vitals. Your max range will be the distance at which the pellet count in 10" is 100. Good luck, hope that helps.