It's amazing that we can have success when you realize this:


TIMING.... The approximate time that it takes a 3300 fps muzzle velocity bullet to exit the barrel, assuming a constant acceleration, is 0.0011 seconds. The velocity of sound in 416 stainless steel is 14,900 fps and a stress wave has time to propagate up and back the full length of the barrel 4 or more times after ignition and while the bullet is traveling within the barrel. The muzzle end of the barrel has ample time to "know" that something is going on at the breach end before the bullet exits.

That a great point Mark. That's probably why you can find multiple sweet spots with a given bullet powder combination.

The KEY is for the "wave" to do the same thing every shot. This means perfect stress releaving of the blank and flawless bedding for a sporter rifle to start with.