The size of the room does make a difference, no matter how far away you are from the source of “air movement”. Sound does bounce around a bit.
Instead of getting into a technical debate, I’ll use one example that anyone who’s ever served in the military can relate to.
Percussion grenades………
Twelve bad guys in a 100,000 cubic foot gymnasium. One toss into the gym. They all get their ears rang, but they can all still shoot just fine. Don’t go in.
Same twelve bad guys in 767’s first class compartment of abut 2500 cubic foot. One toss into the compartment. They will all be disorientated and unable to react quickly.
Think of the M3’s as one grenade and the M80’s as four. Four well placed grenades in that gymnasium will definitely improve the operation’s odds of success.
