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!

see the one place I have to hunt (thats not a field) its on 40 acres anywhhere i go on that land has a 50+ - yd range so buckshot would be more than sufficient from what ive been led to understand

Well I'd still say a full is what you need, wish I knew for sure!

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.

Here's a link to takea look at

http://www.chuckhawks.com/shotgun_slugs.htm

Go to the whitetail deer thred and read about rifled chokes.