I'm not sure about this but it would seem that deer will need a tighter pattern than say a goose, probally really need more than one pellet in it. I would doubt that you'd want to shoot at a deer all that far with buckshot. I'd think a full choke. Probally a better idea is to go to slugs.I understand that they do well out to 100yds, give or take. Then it's simple, buy a slug gun!
The only experience I have had with buck shot would be using 2 3/4 9 pellet 00 buck shot while using my super full choke I use for turkey hunting. 50 yds was about the limit. My buddy was using same set up only using 000 buck shot and he got much better penetration at the same distance. Shoud be sufficient for your set up. Definitely get the tightest pattern you can.
Your going to have quite a spread at 50 yards with buckshot regardless of the barrel, but full choke will give you the tightest group. Burneke(if that's the proper spelling) rifled slugs would be my choice.
While I was up on the mountains looking for some elk, we spotted some off in the distance. And while I was glassing these elk I couldn’t quite pick up the details of these elk because they were clear out there, and because I couldn’t keep steady enough to get a clear picture of what I was looking at. I told my brother, “I can’t really tell ‘cause I’m shaking.” He gave me the best piece of glassing advice I’ve ever been told (‘cause how many glassing tips can there really be...