Whichever one is closer to your face is louder...how much depends on how much.
....but seriously (and anecdotal) I notice blast/noise (with hearing protection) much more in smaller bores with higher velocity when under 22”, than is notable with larger bores and medium velocity. I can’t recall noticing as much difference between 22-24, unless there’s a receiver length in play. I don’t play with magnums much anymore, but they can be nasty under 22”.
