Buckshot question

not really, there are a ton of past topics concerning this if you do a quick search.. and theres the ballistics test sticky at the top of this forum.

at personal defense ranges, I doubt you see enough spread to tell a difference.
the benefit of buckshot is to have a pellet heavy enough to penetrate, break bones (ribs) and still have enough energy to do damage on the soft middle area.

At some longer defense ranges (10 yrds vs less than 10 ft inside) you will probably see benefits in more damage.