I do drop the cash for .001 arrows, and arrows that will be within 1 grain of each other (according to the manufacturer anyhow, rarely true in the real world), I also number my arrows on the fletching and also write their weight on the fletch as well so I have reference on each. However I agree with the above where most people don't have the shooting ability to see even 10-15 grain differences unless beyond the 40 yard mark, including myself. With that said, my pro 22's for the Allegiance all weigh in at 356-357 grains, and my Cobalt X7's for indoor all weigh 549 grains on the nose. I put string wax in the insert and screw in the points to force it in and keep adding until they weigh the same.........(yes I know this is a little OCD and unnessecary)