I'll choose the bigger hole puncher over something that is suppose to tumble or fragment, thank you very much. The performance of such ammunition will vary greatly by barrel length twist rate and other factors. I will also choose something that is specifically designed to expand while staying together (core lock style hollow points) spreading the energy of the projectile over an even wider area while retaining mass inflicting more injury. Generally keeping all the mass together by controlling fragmentation and spreading it over a wide area is the focus of defensive ammunition. If you want to leave someone full of pieces of material why not just use a shotgun?
If dogs are allowed then that might make a decent alarm system, but dogs are unpredictable in a sense of whether or not they will defend you.
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