I have found the same. I load my 308 down to 2550 FPS and accuracy goes way up.My 223 i bring down to 2850 and same thing. I only shoot paper so speed means nothing to me. I just started comp shooting last year and there are a few out there that do not load for speed either. When shooting 300 yards ,does 200 FPS really make a difference?, Im also trying to extend my barrel life too. Speed kills