A heavy, flatnosed .32 ACP similar to the Buffalo Bore also is an extreme penetrator.
http://mousegunaddict.blogspot.com/2...rain-hcfn.html
Owner of Buffalo Bore Tim Sundles on 32 ACP +P Ammunition:
"Item 30A/20 is a 75gr. HARD cast bullet with a flat nose. It is traveling over 1,000 fps out of my 3.4 inch Beretta Mod. 70. We've used a flash suppressed powder so that you won't be blinded by your own gunfire in the dark. This is significant as well over 90% of all civilian shootings in America occur in low light when the criminal element is out and about. Also, this flat nosed, nonexpanding, hard cast, bullet will penetrate deeply and will do much more damage than the typical round nosed FMJ bullet. Round nosed bullets tend to slip and slide through living tissue, doing little damage as opposed to a flat nosed bullet. The flat nose not only wounds much more than a round nosed bullet, but it actually keeps the penetration straight and thus deeper. Notice the below velocities from my personal 32 ACP pistols. These are real world guns and thus the speeds are realistic and not the exaggerated speeds you'll see produced from laboratory test barrels. What you see with Buffalo Bore Ammo advertising, is truly what you get in the "real world" where it matters. You can expect 20+ inches of straight line penetration."