"Soft Lead" Powder coated (300 BLK) Ballistic Mushroom? Gel TEST=)

Super Sonic MUSHROOM..! Cast Lead bullets, Ballistic Gel Test. bhn. 10.1 Lead hardness has a lot to do with expansion in super sonic bullets! But not so much in sub sonic bullets! Soft powder coated cast lead bullets seem to fire and function fine. But more testing is needed (more rounds down range) to be conclusive about leading issues. I did seem to have a tiny bit of lead streaking in the 9mm but not the 45 or the 300 black out.. bullet fit is one thing I can work on...(9mm)