Now that I have been reloading rifle bullets for almost 60 years, it wasn't until I tried hitting a 36" target at 3534 yards I realized how much a half grain difference in powder load affected the shot consistency in accuracy. I will emphatically state that any minuscule deviation in powder loaded into a bullet casing causes a different point of impact that becomes more noticeable at longer distances. The most important single item in long range accuracy is the consistency of powder in your loads in my book. Yes, the A&D FX120i is not inexpensive but it is the best tool I have ever had sitting on my reloading bench.