I use Lapua brass in 6mmBR, 6.5x47L, 6.5x55, 284W (6.5/284 necked up) and 308W. The most spread I would expect for the larger calibre cases is 1.5 max. In fact the 284's came in at <1 grain per 100. As scoped said were the ones out just a few or were they all contained within a flat bell curve? If I bought a box where there was a predominance of 2.5 grains spread I would be taking them back. I did exactly that with 100 6mmBR cases where there were 4 with split shoulders. The seller wasn't happy but did exchange them. When paying a premium price I don't expect to get Federal quality.
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