What are the most common bore shotguns you folks use? 12 bore here, but I prefer my 20 bore shooting 3 inch shells with #5 shot.
I usually start the season with 28 or 30 gram number 7s and as the birds get bigger and start flying higher, I move onto 32 gram number 5s.
7s or 6s for grouse and I never put anything over 28 grams through the father in law’s old side by sides (95 year old Holland & Hollands).
When I was in the gun trade we used to sell a lot of 28 bore over and unders to your side of the pond. Presumably for shooting quail.