"From his 32nd-floor suites in the Mandalay Bay hotel, he fired more than 1,000 bullets, killing 60 people[a] and wounding at least 413. The ensuing panic brought the total number of injured to approximately 867."
You're not doing this with handguns (range) or "hunting rifles" (capacity). It's about firepower and mass killing capability. This is why I didn't explicitly answer your 2nd two questions, do I need to explain this?