Aguila makes some important points and asks good questions.
Being a 1911 guy, I went immediately to the .45 ACP page. What I didn't see was anything telling me what barrel length their test gun was.
Brassfetcher generally tells you up front what gun and barrel length they are using:
From here:
http://www.brassfetcher.com/Bone Simulant/45 ACP Bone Test.html
Six different brands of premium Defensive and Law Enforcement hollowpoints were evaluated in .45ACP. Tested ammunition was Cor-Bon 185gr +P DPX, Cor-Bon 165gr +P Pow’R Ball, Federal 165gr Expanding Full Metal Jacket, PMC 230gr Starfire, Speer 200gr +P Gold Dot and Winchester 230gr SXT.
The ammunition was fired from a Glock 36 handgun, through a bone simulant plate backed by 10% ballistic gelatin blocks. Of the six brands tested, four of the six ammunition types failed to expand in the bone plate/gelatin target. The Cor-Bon 185gr DPX and Federal 165gr EFMJ projectiles performed effectively, by functioning similarly through the bone plate as they did in bare gelatin.
The Glock 36 has a 3.78" barrel which a quick look will tell you.
Here:
Where they shoot through both 10% and 20% ballistic gel (used by the military and denser than the standard 10%) they list the barrel length in the charts at the top.
http://www.brassfetcher.com/Ballistic Gelatin Tests/45 ACP 20 Percent Ballistic Gelatin.html
In the vids they state that at the beginning of the vid.
I don't understand your logic of choosing to carry premium JHP ammunition if you're going to assume that it won't expand. What's the point? The short barrel stuff is designed so that it WILL expand at the slower velocity. Wouldn't it make better sesne to choose ammunition that's designed to work in your gun?
I assume the JHP won't function as it should at all times the same as I assume my bullets, even well placed, will not stop the threat. It's mental preparation for follow up. Additionally if a jhp strikes bone (or a button, belt buckle, etc.) they often do not open as they should or as depicted in clear gel. Many good organs lie behind the rib cage so I look forward to hitting bone. It's good when they do perform as they do in gel tests but i don't assume all will.
Experience has taught me to be skeptical of the claims of manufacturers of any and all products when it comes to their promises. Somehow neither Axe deodorant or Old Spice Shaving gel have set hordes of young human females in aggressive sexual pursuit of my manliness.
So I'm skeptical of the claims that ammo designed for short barreled guns will give me the same results from a 2.5" barrel that they will from a 5". Paul Harrell as well as others have vids online about this and can be searched out.
Essentially they use a bullet that is identical, or so much so, that the difference is of no reliable use. They charge extra for the packaging and a claim is all.
This is part of the reason that I use 185 gr. bullets from my Colt Defender and my Commanders for self defense. The additional velocity aids in expansion. But I do not seek out "short barreled ammo" for the Defender vs. the Commander. The same bullets are likely used in both and I see no significant difference in performance. Rather I do not foolishly expect that a hideout gun (subcompact) will do the same as a full size piece or a compact piece.
If a fella wants to spend the extra money and worry about it go on ahead.
Select a decent jhp that you can shoot well. It's you that provides the magic and not the bullet.
tipoc