I have thought that 3.5" were not needed for a long time. Back in the day when you could shoot lead, I killed more than a few ducks with 2 3/4" lead #5 Baby Mags. I tried 3.5" one time and said no thank you. If you can't work the ducks into a decent range, let them go.

I may not be smart but I can lift heavy objects

I have a shotgun so I have no need for a 30-06.....