Leonardo, I'd be very surprized to find flash holes off center on Lapua brass. At over a buck-a-pop I'd request to return the brass & exchange for a different lot#. The 6.5L brass I've got showed there was no need for flash hole deburring. All were clean, well formed & uniform in every way. I did set aside 2 out of 100 for being too heavy. Not saying Lapua is 100% perfect but they're pretty darned good as a rule. Have you had a chance to inspect all the brass yet?