I was sitting at the range shooting several guns and regulating a couple double rifles, when a guy i knew walked up with a Manlicher rifle chambered in 30-06. It was engraved and the stock was carved and looked to be all "top of the line" work... It had been given to him as a gift by one of the "royals" in Sweeden when he was there...
Anyway, he said he was going to sight in his "moose rifle" as moose season was about to open... He was a ways away from me, but i noticed the "bang" sounded odd as he fired... He fired several more rounds, and then came over to me and asked if i would look at his rifle, as it wasn't shooting for crap!!
I went over to have a look and the FIRST thing i noticed was, the "blown out" 308 Win. brass on the cement by his bench!!! After i pointed that out, off he went red faced for the "proper" ammo!!!
I think you can see about anything at the range if you spend enough time there!!
DM