One of the ways the effectiveness of ammunition is tested is by firing it in ballistic gelatin. Ballistic gelatin simulates body tissue. It isn’t a perfect match for human tissue, but its close enough to get a realistic idea of how damaging a specific type of ammo might be.
I recently saw a video of a 20 gauge shotgun firing No 4 Buckshot into gelatin as a test. I have asked one of the good folks over at Brass Fetcher Ballistic Testing if I could share their video. Here is the link to their YouTube post. http://www.youtube.com/watch?v=PDjNaTeUt2Y
From time to time, we will post more of their work. Check them out at www.brassfetcher.com