Well, not that this may apply, but it is a theoretical scenario.
Let's say someone buys a AR for home protection, knowing that they'd have more rounds with a 30 round mag in the event of a multiple-intruder home invasion event. At 25 yards, it might pay to "cook-off" 30 rounds fairly quickly to see how effective/ineffective one's shooting is with that rifle at that distance. Now, unless the individual "testing" his abilities has rented 3 lanes so that he can shoot at different targets, as a home invasion might see happen, I'd guess he was limited to firing all his rounds at one.
Besides, it's the other guy's bullets, not anyone else's.
Let's say someone buys a AR for home protection, knowing that they'd have more rounds with a 30 round mag in the event of a multiple-intruder home invasion event. At 25 yards, it might pay to "cook-off" 30 rounds fairly quickly to see how effective/ineffective one's shooting is with that rifle at that distance. Now, unless the individual "testing" his abilities has rented 3 lanes so that he can shoot at different targets, as a home invasion might see happen, I'd guess he was limited to firing all his rounds at one.
Besides, it's the other guy's bullets, not anyone else's.