I disagree, Dave. While no one would leave their mag in a jar of solvent overnight, you might use a solvent around them (leaving some residue) for several years and achieve the same “test” – leaving them to soak overnight just accelerates the test. As far as I can see, the upshot of all the chemical testing is that the plastics used in these mags are pretty much immune to normal solvents (and that’s a good thing to know, IMHO)
Those test, while rather “unscientific” are certainly interesting, in that we begin to see the potential failure modes of the various mags he tested. For example, I now know that I should inspect my PMags for cracks on the rear spine, as this seems a common fail point. If I had Lancer mags, I would know to watch for rusting, etc..
And he washed his mags in the dishwasher! If I had tried that test, I’d be sleeping on the couch for an extended period, for sure.