Nope..just studied pictures...

Pantiles does have a Reilly that looks "allright", but the rest is nowhere close of that quality I would be looking for. Indeed they might be fine people to deal with if that can compensate anything

.
You were looking for a .577...here is one:
http://www.schwandtclassicarms.com/charles_boswell_577_bpe_hammer_d.htm
http://www.bestgunsaustralia.com.au/indiv_guns_pages/double_rifles/alex_henry_48285.htm

Time to move now..
http://auctions.holtandcompany.co.uk/asp...7&saletype=