On his web site the late Stephen A. Camp has two test-analysis web pages — "38 special expansion tests" and "38 Special LSWCHP +P- Still a Top Load?". Text and photographs appear to show the "FBI" load when fired from 3–4-inch barreled revolver, to be somewhat superior in expansion and penetration to 9x19 mm self-defense ammunition available at the time when fired from most pistols.
Text, especially with included photographs, I found extremely persuasive. Unfortunately, the last experience I had with uniformed officers (long, long ago), my friends used S&W Model 28s with 357 Magnum ammunition. So I hope those having experience with 9s and "FBI" load in non-snubbies will furnish information.
Text, especially with included photographs, I found extremely persuasive. Unfortunately, the last experience I had with uniformed officers (long, long ago), my friends used S&W Model 28s with 357 Magnum ammunition. So I hope those having experience with 9s and "FBI" load in non-snubbies will furnish information.