Lots pf us that started shotgunning before the common availability of choke tubes(Note the first US patent issued for same was in the 1860s) learned to change loads for different shot opps.
Out of tightly choked repeaters like we all had then, cheap 8s worked for quail, hard 7 1/2s for longer shots there and dove,even the first shot on ringnecks over dogs. Squirrels, pheasants and rabbits got 4s,5s, or 6s, ducks got 4s and geese 2s. Most of us bought ammo one box at a time then, so we always had plenty of variety. Those who reloaded oft tailored ammo for a mission and barrel.
Choke tubes have changed that, though I note that I can still do a decent job with an 870 and a fixed choke.
Out of tightly choked repeaters like we all had then, cheap 8s worked for quail, hard 7 1/2s for longer shots there and dove,even the first shot on ringnecks over dogs. Squirrels, pheasants and rabbits got 4s,5s, or 6s, ducks got 4s and geese 2s. Most of us bought ammo one box at a time then, so we always had plenty of variety. Those who reloaded oft tailored ammo for a mission and barrel.
Choke tubes have changed that, though I note that I can still do a decent job with an 870 and a fixed choke.