For sure, and I'm just musing and thinking of things that I would try to do if I was going to be called as an expert witness and what I think a jury of mostly laypeople would be wanting to or interested to know so that they would be confident that what I did was sound and logicalI cannot testify to the jacket or bullet, but certain corrosions can take years to develop on aluminum. How long should we wait for these test results? There are also different types of corrosion so more tests. Also, corrosion tests are destructive & it’s already been stated the round that was found needs to be kept intact for the tool markings as proof (the master template). Had they tested other rounds, they’d probably be scrutinized for doing so in that it’s "not the exact round".
To be clear, I’m trying to remain neutral because we’re not even half way through the trial. They’ve already described how the bullet was found in the ground & photos were provided, that’s part of chain of custody. The P doesn’t need proof with any doubt, just reasonable doubt. Evidently they feel based on their experience, they have that. Prior case law involving ballistics would also set precedent as far as how much is needed.
I respect that you’re an engineer, but if you’ve ever been involved in durability testing, it’s usually never performed until complete failure, at least not for every test & in a manufacturing sense. That is unreasonable & not cost effective.
You’re not necessarily wrong but your expectations are more than what is needed in this case.
JMO
You never know with juries