I have the Forster hollow pointer, and did a bunch of .32WCF for raccoons. It does make a difference, but the bullets have to be soft. Too hard, or too fast, and they'll shatter. I tried some 38-55 and 45-70, too, and shot the bullets into a live alder tree. Not really scientific, but the results were discouraging. I don't think it's worth the effort.