I ordered some 1000 round bulk Federal XM193 a while back and just got it delivered the other day. While watching a movie I put it on stripper clips prior to storage and discovered it was short 3 rounds. Now that's not the end of the world but I was wondering if it's a common occurrence as I would imagine they fill the boxes by weight and not an actual count. I figured, if anything, that it would have been over by 1 or 2 rounds so I was surprised to find it under by 3.