No dog in this fight but just like rifle bullet's, there are a few different kinds of buckshot. Having shot a bunch of deer with buckshot and over the past 5 years at our local club I have seen a lot of deer (probably about a 100 deer a year on average) taken with buckshot. The difference between Hevishot of copper plated lead is drastically different than plain old lead. I have personally taken decent sized bucks at the 40-50 yard mark with my gun with the Winchester 3.5" 00 Supreme loads. Those will blow through front legs on a normal 130-160lb buck. It is actually quite amazing. I have seen the plain old lead not even crack the front scapula with 3" 12 00 at 25-30 yards.
I fully understand that you all are talking bear defense guns, but I just wanted to throw out my experience using and observing a bunch of buckshot loads. I see it every fall, a guy buys a huge box of lead shotgun 3" mags and stuffs them in his 1100/11-87 or whatever and BLAZES at deer. I would doubt a bunch of these fellas ever put them on a pattern board to actually see what happens, but most of the shots are pretty short, under 25-30 yards, so they will kill deer, but it usually takes a few shots. The good stuff will dump deer with a good patterning shotgun.
Now, saying that, if I had a choice, I'd be much happier with my 45-70 loaded for bear..
I fully understand that you all are talking bear defense guns, but I just wanted to throw out my experience using and observing a bunch of buckshot loads. I see it every fall, a guy buys a huge box of lead shotgun 3" mags and stuffs them in his 1100/11-87 or whatever and BLAZES at deer. I would doubt a bunch of these fellas ever put them on a pattern board to actually see what happens, but most of the shots are pretty short, under 25-30 yards, so they will kill deer, but it usually takes a few shots. The good stuff will dump deer with a good patterning shotgun.
Now, saying that, if I had a choice, I'd be much happier with my 45-70 loaded for bear..