If you've never seen and/or would like to take a look at a Parker Reproduction BHE .410 on a 0000-frame, go here:
http://www.icollector.com/Parker-by-...6-b_i10488354#
I believe we discussed this very gun a few years ago. You can see another, this one engraved by Geoffroy Gournet, on pages 38 & 39 of the Winter 2013 DGJ.