I have dad’s over and unders to use if I need to look good doing clays but I used grandfathers model 12 in 16 gauge out last fall for a good few rounds and it was very enjoyable. There were 7 shot low brass boxes in the stash that were most likely grandfathers also.
I replaced the 16 gauge shells at a good price when Indiana gun club got in 16 gauge shell pallet. I think there is 3/4 box of number 2 shot I think grandfather used to hunt ducks with still in the stash.
i shoot pumps for clays pretty well growing up shooting my 870 forever. They just point well for me.