I believe in waiting until a guy finishes off his magazine. Sometimes, actually many times, it is not possible. For instance, in the example I mentioned, I asked the guys next to me, 'can I get a cease fire?'. I waited for these gentlement next to me to finish their magazines. There were a few of us on the bench, people shooting at different times. I sort of expected everyone just to finish their magazines and then pass the word down to the next guy when he finishes. That's what usually happens. In this case, the guy, who refused too open his action for me, just put his gun down. I saw him, with my own eyes, just put his gun down, magazine unfinished.
I honestly don't think the guy was being malicious. He was a young guy who probably just didn't know, and believed that a 'safety-on' is the end-all-be-all of safe gun handling. I didn't feel like being the range nazi, so I just left.
I just believe in being super safe. One mistake is all it takes to end a life, so being overly safe isn't a bad thing. That's why I refuse to cross a barrel.
I can honestly say that in my entire lifetime of handling and enjoying guns, I have never flagged someone with a barrel, loaded or unloaded, and I have never knowingly allowed myself to be flagged by a barrel. I was taught that this is the ONE rule of gun handling, as long as you follow it, if you, as a fallible human , accidentally violate the other rules, no one will be hurt.
On a related story...
I go to four different ranges here in central Texas. Next time I head to this one indoor range with barriers in between the shooting stations, I am going to take pictures of the booths. There are clear examples of negligent discharges that you wouldn't believe, where a bullet hit the bullet resistant glass separating the shooting bays.
One time about a year ago, I saw a guy teaching his girlfriend how to handle a pistol. He chambered the round, then preceded to show his girlfriend how to handle the gun, with a round in the chamber, finger on the trigger, and with the barrel pointed squarely at her head. And for a fact the safety wasn't engaged because it was Glock. I immediately went to the range master, who was about ten feet away, pointed out the NRA demonstration that was happening right in front of us. The range master saw the guys finger on the trigger with barrel pointed at the girlfriends' head. He had an OH SH*T moment, and very carefully approached the guy as to not startle him.
That's why there are so many negligent discharges at this range. They cater to true beginners.