Elegantly and perfectly said . This !HST is the standard to compare against in 9mm, .40 and .45. Any of the weights and +P or regular...
I did a lot of this in the 90s, when it was just ignorant writers in gun mags doing uncontrolled "tests". But now? It's been done 12 ways from Sunday and the results are readily available (for now anyway!) on Youtube. Why not smoke the ribs and watch videos?
It is fun to recover bullets, but nowadays since most of the designs actually perform as advertised, it's a lot less interesting. I still have a box of the bullets from the 90s that would not expand-- Hydrashoks, Golden Sabers, Silvertips, Gold Dots, etc. All garbage prior to about 1996. Wouldn't expand in water, unobstructed, 5" barrel Beretta 92FS. Neither would much of anything from a 2" .38-- 110 gr. Nyclad and 158 gr. lead SWC "FBI load" being the exceptions, and they didn't expand very much. Things are so much better today. Oh-- what did I learn in 1994? Buy a .45. Today? Buy a nine.
If you just want nice pretty expanded bullets-- get a 55 gallon drum, fill it up with water, and shoot straight down into it. You and your gun(s) will get wet. It is unlikely that you will damage the barrel. Sink a towel or something to the bottom if you want to be sure. I did manage to cause a leak in the bottom of a rusty barrel one time. It was almost rusted through anyway, but one of my unexpanded HPs hit it hard enough to crack the rust. I mention that for completeness.
In any case, good luck and have fun! Do include HSTs though-- they really are the standard to compare against.