One of my instructors who goes by the name of a “athlete type teacher” told me not too pick up free range ammo?
Definitely not advised. Especially with the possibility of 9mm major laying around. However a friend of mine gave me a fairly large box of stuff he picked up off the range. It was yucky so I ran it through the case cleaner. Then I fed some of it into a brand new never fired Glock 45. Some shot good, some didn’t, some was loud, it all made noise.