That's right, Edward Marshall and not Isaac Haines. Either one would be great but I'd do the Marshall for the weight if using a bigger cal.
If at all interested in a much more historically correct barrel profile and this weight (because I know you're looking at this from a historical reality perspective), the Rice JJ Henry barrel profile is much more accurate. All the off the shelf swamped barrels are way more swamped than most originals were.
For anyone interested, Brad Emig at Cabin Creek tunes locks. He is the only one I know of that provides the service to a widespread customer base. Polishing the parts is very easy if you understand the mechanics and do's and don'ts. Adjusting geometry and case hardening the frizzen is another thing.
