I considered re-boring on my project that I have been working on. The time frame for re-boring wasn't all that excessive and the cost was basically the same as for a new barrel. The biggest issue was that the results were not guaranteed. I understand the re-bore's issues with the unknowns associated with old barrels, old steel, so not blaming them, however I knew the new barrel results would be guaranteed. So, I think eightbore is spot on.