#4 buck in the trade gun.

[Bigpete]

AAA is around 5.5 mm and #4 buck is around 6.1mm Pete

Ah ok,so a bit different. I didn't bother to check my shot size chart before posting that lol. I probably should have

 

[Bigpete]

Actually AAA is 5.16mm,same as American T buck shot.

 

[longcruise]

Back in the early 70's I recall some hunters in Virginia using #4 buck for deer.

 

[Eterry]

Back in the early 70's I recall some hunters in Virginia using #4 buck for deer.

My dad lived in Alabama in the late 50's. The cover was so dense, the deer so abundant, it was illegal to hunt at night, (****, rabbit, fox, etc.) With anything larger than #6 birdshot.
He shot a deer while sitting on a stump and the shotgun across his lap. The deer was 5 feet away, he cocked the hammer and touched the trigger. He used #4 Birdshot.