BULLET WEIGHT AND TESTING ACCURACY
My take on Mann is that the spinning bullet, viewed from the shooter’s perspective,
rotates about a CENTER as it travels downrange;
and that CENTER rotates about the center of the resulting group.
Ric Baxter’s drawings, some comments here, and my experience as shown here, with large numbers of shots per group, support this notion.
Now we come to the method of testing to prove, beyond a shadow of a doubt, what the right-thinkers amongst us know to be true: that segregating bullets WITHIN a .4 grain range has no effect on accuracy.
Bullets that vary from -.4 to 0 grains shoot as accurately as those that weigh the same, on the alleged plateau.
One method is to shoot groups of 5 where 1 weighs .4 gr. less than plateauers, 4 at plateau weight.
Another method is to shoot groups at plateau level, and other groups at plateau-.4 grain level.
Given the Mann notion, what’s the best method?