I can't provide details on the slugs, as I don't know them, but I have seen quite a few deer drop in their tracks, or go a very short distance, when hit with 20g and 12g slugs. This mirrors my own experience shooting anything from .45acp to 25-06 to .308. A well hit deer rarely goes far at all, and I have been very lucky to have a very large percentage drop dead right there.