The other elephant in the room of this discussion is that jury's are fikkle creatures, and common sense is not a pre requisite for service on them. Knowingly doing anything that could increase the chances of altering even one jurors perception of you is a bad idea, imo.
Is using handloads based on published data any significant difference than factory ammo? No. Could a juror or 2 still be convinced by a slick lawyer that there is and use it to cast you in a bad light? Unfortunately, yes. And can that perception of you by a juror or 2 be used to flip what would have been an aquittal into a guilty verdict? Yes.
This is the reason why you will not find any law enforcement agency carrying handloads even in situations where the argument for them carry the most weight such as accuracy for snipers. When liability gets shifted from one place to another it's always best to be able to have liability fall on someone else.
At least for me, knowing that hand loaded ammo has the potential to make life more difficult for me you're my attorney is enough to stay away from it in my carry guns. Mounting the best defense possible starts with doing everything I can to reduce all these wild cards that could come into play. Hand loaded ammo, non factory-spec parts in my gun, etc, are all things that can be used to put the spotlight back on me. Why add complexity to the case when it is so easily eliminated before the fact.
Unfortunately, sometimes with juries fact has to compete with perception and feeling, and sometimes it comes down to luck, and whether or not a juror "likes" you or not.