Just a couple thoughts, hopefully they help. Also using a blind will cut your hunting pressure down and keep you from clearing the need zone. Without having the scope you will typically want to have them within 50m to get good shots so being able to call them in is crucial. Go find some need zones and put a stand within caller distance and call things to you. Another option is find a map with smaller game, I prefer class 3 animals like Roe deer/Blackbuck/Axis and such. 22 pistol you can hunt geese as well, just know the zeroing at 25m is broken and is actually like 200m. Geese are insane cash ($900+) and good xp. Look up some videos on YT for hotspots if needed. Pretty much any field with 20 decoys and a blind should work.

Shotguns- I would suggest geese on Hirsh.

I would recommend to use one that can use the scope, i know the new 10g one that came with the muzzle loader cannot use a scope.

I just think that most people prefer bows for close ranged kills over the shotguns. They aren't bad for birds and large game with the slugs though. Unfortunately buckshot is fairly lackluster due to penetration issues and the large spread leading to higher chances of hitting trophy organ/skull.

Thehunter call of the wild pc handguns