I do a lot of tinkering. In fact, that's about all I do anymore. I've seen the chart, I've used the chart. It does NOT work. According to the arrow drop I had from a particular bow the chart said my bow was shooting about 294fps. All the chrono's said 264fps. I've tried other bows with the same results. 30fps too fast.

I wish. I chased 300fps for over 10 years till I figured it all out. It's a bit rough at 27.5" draw. So what happens? I get a Martin SlayR that does 308 at 53# with an IBO setup. FINALLY!!!!!!!