You have to compare apple to apples and possibly each barrel against itself or own merit. There can be small perturbations in each tube due to manufacturing and later oxidation; therefore, in order to establish a baseline, techniques like X-ray or Magnaflux, non-destructive testing like the Austrians have the option of using, would need to be employed to identify the problem areas and then the destructive testing could commence.

Kind Regards,

Raimey
rse

Last edited by ellenbr; 04/20/08 08:12 AM.