Do you remember when the Las Vegas shooter killed 60 people and and injured over 400 more (not counting the hundreds more injured while fleeing)?
You should, since it was the most deadly mass shooting in the history of America.
Anyway, he fired over 1000 rounds in the process but even with the record death toll, it still wasn’t enough to make the pro-gun community agree to ban bump stocks, despite them insisting they were just a range toy anyway.
So who needs your hypothetical shooter that’s impossible to measure when we have so many actual dead people just piling up because you repeatedly defend them.