I did a test ago, with 3 different devices. Since then, I don’t share my Amp readings in my reviews anymore.
Here’s the link: How much do you trust your DMM Amp readings?
Had a long PM conversation with Sidney_Stratton, who tried to educate me about using shunts… unfortunately, I just didn’t really understand it, and had no idea where to get, and what to get 
Perhaps he, or someone else who really dived deep into this could help out.
At least, I learned that I don’t really trust my Amp readings …