I stumbled upon these guys on YouTube the other day. They've got a few really good videos up in which they do some .45 ACP and .380 ACP ballistics gelatin testing.
Whats interesting about their testing is that not only are they using a jacket and a t-shirt to cover the gelatin, but also a rack of ribs. Its very interesting to see performance (especially in the .380) when the bullets strikes rib bone.
*BTW here is another test of Winchester PDX-1 in .380 which is very impressive..... 1 inch of expansion in water!