ChrisB and .44AMP.
The range was 150 yards, tilted downward at a SLIGHT....angle. As in a few degrees just to prevent a straight-back ricochet.
there was roughly 6 ball ammo hits on the one piece of iron, at least 2 inches apart. None did more than "dent" it and make a tiny dish.
We fired 3 API rounds at the same plate. 2 heavily dished and dented the back, the third actually popped a teeny bit of metal out the back, making a pinhole. I am not positive, but I suspicion that it hit where a ball round had already impacted.