If the shooting is restricted to shotguns with No. 7 or 8 shot, that would be fun. But do you folks seriously think it's a good idea to be shooting up in the sky willy-nilly with centerfire rounds? You'd need to be on wide-open land with literally nothing for miles around.
Only if you miss!
I prefer 1 3/4 oz load of lead 5s @ 1400 fps. But, the .410 with a 3" load of 6s does the job.