I think that you misunderstood what I was saying.My point is how many armed encounters does a resonable person expect to survive.I wouldn’t expect to expend that many rounds,I’d be killed long before 250...
But maybe the original poster had more than just one battle in mind.
He who shoots first and often wins.
A shotgun often wins such arguments, which is why the US MArines carry them in close combat. A group of 6 or 7 tangos standing together at 50 yards can be taken down with two shots of 12 ga OO buck. And when others come to get the wounded in the dark, do it again, but from a different position.
I could see working through 250 rounds that way over a few weeks or so.