I have began testing skinny vs. fat. I built two arrows that weigh exactly the same, 331 grains. My fat arrow is a Carbon Express CLX 250 (.350" diameter), my skinny arrow is a Victory VAP 350 (.229" diameter). Both arrows are fletched with the same AAE 1.75" They are shot out of the same bow, a Hoyt Pro Elite Edge set at 56 pounds @30" draw. All arrows are cut to 28.5". The VAPs did have more FOC because I had to use a 80 grain point and a 70 for the CLX, and the CLX nock weights more). My bow is tuned for Victory VAP 400 spine with 70 grain points, so there could be a little difference because of the tune. In the future I plan on tuning two bows for the two arrows, but it was a beautiful day and I just wanted to see what would happen. The VAP shot 293fps, and the CLX shot 290fps (shot both arrows 3x to verify) I can't get my pics to upload, I will try to load them separately. The results: I shot both arrows using a 20 yard pin, aiming at the same spot. I shot at 20 yards, then at 30 yards The VAPs dropped 4.5" and the CLX dropped 7" (all I can shoot in the yard) I need to get to the range and get out to 50 yards. According to the ballistic calculator, the CLX's should drop 30" more than the VAP's at 50 yards. The CLX's did drop 2.5" more between 20 and 30 then the VAPs. I want to see how much being off say 2 yards at 40 or 45 yards compares to the .066 gain of the CLX, What good is the fat arrow if you are 2 or 3 inches low?