I fired a few 17 HMR rounds at a couple of targets printed on printer paper this morning that were taped to a piece of sheet steel from a old above ground pool.
I was surprised to see a small ring of tiny dots/holes spaced uniformly around the bullet holes at about 5/16" diameter that were made from the backing side of the targets.
I am not sure if it was the points or the jackets that caused it.
Have any of the rest of you seen that?