Re: good grief !
FWIW I have shot probably 15K hornady AMAX. I've seen so many variances that I won't use them in a real match. I can get them cheap from a good source so I use them in short range 300 yards or less practice. But the OAL AND the Ogive have varied quite a bit. Seems like sometimes they don't get the bullet all the way to bottom in the form dies for some reason. And those bullets generally don't shoot so well. The good ones shoot really well though. Just enough variance not to trust.
And as mentioned, if being anal--- read the seating depth to the ogive and adjust on each round. I can't see enough difference out to 600 to worry about it in a highpower match, but out to 1000 I do see the differences.
Get as close as you can, but utilize your skills as needed.