Yes you can. I know a number of people who have. You have to be at very close range (bow range - say 20 yards or so) to use a buckshot. But, I would use #2-4 high velocity steel if I were going to do it with a full or extra full choke. Of course the best would be with a slug if using a shotgun. Of course, rifle, bow, crossbow, and muzzleloader would be my choice before taking a shotgun. Again, make sure you're close and are using a full or extra full choke...and be able to get out of the way
, but it can definately be done. Shoot right at the back crease of the shoulder (I think that would be best for a shotgun using shot (even better if it's quarterd away a little so you can get behind/through that armored plate easier.
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