Kinda of a non specific question. A 12ga in mod/full was probably the most commonly sold choking as most folks still think they need tight chokes to hunt despite never shooting beyond 30 yds in their experience. What would be hunted with in those days was just about anything. In the days of fiber wads patterns did tend to be more open than with the plastic wads we use today. By varying the shells from the lighter "upland" loads to heavier waterfowl loads the 12 would meet most requirements. When I was a kid about 60 years ago the hardware store shells were still typically 1 1/8oz in light loads and 1 1/4 oz in the duck and pheasant loads. About 1956 the 2 3/4" baby magnums appeared with 1 1/2oz loads if I recall correctly. There were some 3" mag 12ga around which were largely waterfowl and turkey guns which launched 1 1/2oz loads with better velocity than the short mag. Above that it was the Super 10 and then 10ga Mag loads which were goose guns. A light weight 10ga in 2 5/8" made a dandy duck and pheasant gun with 1 1/2oz loads.