Here on the homestead, I use a CF380 to put down various animals for slaughter. Coming up we will be putting down a cow on our next slaughter day. I am wondering if there is any advantage to using a hollow point vs a standard ball round. I will be firing from less than 12 inches into the cows head, is that enough to allow for the HP to expand? My goal is to put the animal down as quickly and painlessly as possible. This is a somewhat academic question as people often use a .22 from the same range for cows to good effect.