Those 8mm bullets have some funky striations on them.
Just curious here if your referring to the slightly visible lines running the lenght?
Otherwise I think I now know now why I missed that hog Saturday morning...
On a side note, I was shooting at the range one afternoon when a fellow stepped up and told me my loads were severely hot as he looked at my fired cases laying on the table. I ask what on earth gave him that impression, and he said, "well you see that ring around the case there just below the shoulder, that is a definite sign of high pressure."
Well I looked at the case and sure enough there was a shiny ring right around the case just below the shoulder. Then I pulled 5 or 6 out of the MTM box and guess what, same shiny ring. I showed them to him and said I guess your right, they are about to pop just sitting in the box. It was just a shiny spot from the rattling around in that plastic box. He left with no further comments.