This is the reason why I'm less critical of amateur ballistic testing than many knowledgeable posters.
Good service caliber handgun ammo tends to work as expected almost regardless of the test medium.
This 2018 test of the redesigned 147 grain HST was done with Clear Ballistics Gel.
https://www.ammunitiontogo.com/produ...-ammo#gel-test
Although 10% ordnance gelatin would be more definitive, I found the inconsistent expansion troubling.
This less-than-perfect test protocol result combined with reports of lower velocity than past loadings were enough for me to question whether the current offering would still expand reliably from a short barrel.