I have a Beretta Pigeon in .410 bore that I have used on both bobs and dove.
With a 3" shell and no. 6 shot, it's pretty deadly on both.
Normally, I shoot a 28 ga. on bobs and a 20 on blues and dove.
"Count that day lost whose low, descending sun
Is not, in part, obscured by powder from my gun"