Actually, research has found that gel test performance correlates rather closely with how ammunition performs in shootings on the street. Not perfectly, of course, but closely. "Close enough for government work. "
Here is what someone from Federal says:
"...And then us being very lucky having very good relationships with numerous law enforcement agencies over the decades, we have learned that what works in this gelatin and looks good in the gelatin ends up being correlated and proven out on the street...."
https://www.luckygunner.com/lounge/why-ballistics-gel-works/amp/
Not really what? How are different bullets supposed to be objectively compared to each other unless the conditions are controlled and consistent?
Of course. That's essential to good engineering and good analysis.
Why do you believe it to be rather unlikely"?
By the way, the tests were not designed as an "advertising gimmick". They are intended (1) to support the development of effective defensive ammunition and (2) to define performance criteria for ammunition procured by the FBI and by othe agencies that rely on the same information.
*sigh* Here we go again...
Here's what I'm saying:
There is no doubt that gel block analysis is important, showing a number of things like expansion, penetration, stability, and proving (or disproving) bullet construction and materials. I got it.... and I agree. Those tests are done under laboratory conditions to minimize the variables, and they produce a result under those conditions.
To quote meself, in my original post...
If you are carrying to defend yourself against gel blocks, then all the research is valid, but there will be nothing text book about performance if and when you would have to fire that ammunition in the Real World... there are simply too many variables.
Gel blocks aren't moving, they aren't wearing clothes, they don't have bones, their arm isn't in the way, they aren't standing 45^ to the shooter, they aren't standing next to a tree, it isn't raining, and... they aren't shooting back. As the shooter, you are not performing under laboratory conditions, with the exact same ammunition, with the exact same firearm with the same barrel and barrel length (unless by coincidence.)
Now... here is the crux of what I'm saying... Like bdickens relates, Federal, in his example, gets feedback from LE shootings, and that the bullet performance is generally admirable, although I will take that comment with a grain of salt given the source ('someone' at Federal isn't going to say 'wow, our bullets didn't perform well at all.') In this same thread, Hartkopf relates LuckyGunner's experience where he had dissimilar results in his own testing (between GoldDots and Ranger T's.)
So, who's right?
Take the bullet out of the laboratory and introduce variables and you are bound to arrive at different results. In the Real World, a bullet proven to expand in a gel block fired in self-defense MAY expand perfectly, it may not, it may come apart, it may tumble, it may turn and come out his pinky... you don't really know. That is not to say it isn't likely to expand as it did in testing, but it is not guaranteed, and I wouldn't be surprised either way.
That's what I'm saying.