I've done it. Dilute it quite a bit, 20:1 isn't too dilute by any means. I used 3% and it did the job plenty well. Considering that HCl is many, many times more reactive than vinegar (on a molecular level) just 3% has plenty of rip for our purposes. Don't do long soaks - give it 3-5 minutes, brush off whatever is loose to expose fresh surfaces, and repeat. Dip your cleaned parts in a saturated Arm n Hammer bath or at least rinse it really well. HCl will jack your pH something terrible.
I much prefer using muriatic for cleaning vs vinegar because it's faster and nominally cheaper, but it's also hazardous. If you don't know what you are doing with strong acids, don't use it.