Kirby, the neck thickness variation was not good but was no worse than Rem. Win. or Fed. It was obviously much worse than the average Lapua or Norma necks, but I have had batches of 6.5 - 284 Lapua cases that were every bit as bad as the Bertram cases.
One thing I failed to mention was the head space or base to datum line dimension . A 338 Edge go gauge measures 2.467 (with my Stoney point comparator) and the Bertram Brass varied from 2.467 to 2.458 with most falling into the 2.463-2.464 range. ( about 60%). There were allot of the short ones (30%) that are going to be stretched, during firing, more than you would like to see. Nine Thou. is a quite a bit of case volume variation to deal with for initial load development, so I would sort out the short ones and use them for the break-in rounds. ---- RHB