I have read quite a few discussions about bullet weight and the consensus seems to be that heavy gives better penetration, but I haven’t seen that in my one test that I did. I am planning to do some more testing with multiple calibers. I tried shooting metal, cinder blocks and other random objects and the lighter faster bullets seem to penetrate better. I tried a 240 grain and 400 grain for comparison out of my revolver. I found that the lighter bullet punched holes better than the heavy bullet.