Thanks to all who helped on my shunt/current measurement problem.

I built a prototype based upon inputs from several of you - Chris, Tom, Spehro,
Michael, Russel, ... - and it was successful.

What I ended up with was 2" of AWG 12 for the shunt (it's actually just a
section of a lead which would normally be there), an AD626 configured at
gain=100 per the data book, a single cap for the LPF, and several bypass caps.

Works great!  Thanks!!

Andy