RE: buckshot
Don't assume that the full will pull them in tight, sometime it scatters them...As I mentioned, my Browning prefers an Improved Cylinder and will put 5-6 pellets into a horizontal 8 1/2 X 11 piece of notebook paper at 40 yards...I prefer to take a newspaper, open it up, tape that 8 1/2 X 11 piece of notebook paper in the middle and check at 40 yards, that's as far as I like shooting any game with a shotgun using pellets...
Buckshot is deadly if the gun is patterned and shots are kept within this pattern...Just like any weapon, if used properly it's deadly...