I picked up the 1885 High Wall I won from the Amoskeag auction rifle this afternoon.  It seems that it was a definite work in progress.   
The pistol grip action is in great shape with no visible wear and a nice blue job.  The barrel is marked under the forearm: Douglas xx 12 twist .3191 groove 12.1.96.  On top of the barrel is Paul Shuttleworth's name so maybe this barrel was once his.  The caliber is marked .32 x 1.6  (the 2 is not lined up with the other numbers).
The bore is perfect.  There was some speculation that the 357 MAX case sized to 32 is the parent for this chamber, but that is not the case.   

Now for the not-so-good.  I hesitate to say bad because the issues are fixable and the price was good.   
The forend is taped on because it has not been finished completely.  The barrel is a bit fatter than a #3 weight Winchester.  There is a screw hole in the barrel but some wood needs to be removed so the forend can slide back far enough for a screw to fit.  I would prefer a dovetail.  Speaking of dovetails, there is not one for the flat spring, but that may be because the spring, hanger, and screw are missing as is the extractor.  The firing pin had been repaired with a thin piece of wire in a hole drilled in the face but the wire was stuck forward in the block hole preventing the block from dropping.  A couple of taps with a wood dowel fixed that.  Just needs a new wire but the hole in the breech block is very tiny and will need to be opened up.  I will make it so an MVA firing pin will fit.  It does have a single set trigger, but the rest of the parts are for a standard trigger.  I do have all the missing parts and a hammer with fly to complete a switch to a SST.

It is definitely not chambered for a case based on the 357 MAX.  The MAX rim is too small.  A 32-40 rim fits well.  I might shorten a 32-40 case to 1.6" and see if it fits.  Or just do a chamber cast.   

I may reach out to Gail to see what the chambering might possibly be.  Any thoughts?

Everything is in great shape so I may spare it from my Harlow inspired measure once (or skip that step)) and cut twice machining and possibly see if CPA can cut the barrel dovetails and maybe rechamber for 32-40 if there is not a good brass solution.  I prefer longer cases in High Walls as there is less change of spilling powder when loading at the bench.

Jack

A chamber cast is on tap first thing this morning (after a shower, breakfast and a nap).  A shortened 32-40 case would not chamber at 1.6” but would an about an inch so the case needs some sizing in the neck. Breech seating is my goal and I have a recent eBay Hoch nose pour tapered bullet with a base that measures.320 and weighs 204 gr in 20-1. That should give me a starting once I get the machine work done.   

Jack

It definitely looks like a shortened 30-30 case.  It might be a challenge getting a sizing die.  Maybe a cut down 30-30 die.  I haven't compared the cast to a 30-30 case yey.

Jack

Right, rent a reamer and turn it into a 32-40.

Understood, it is a cute case!

BTW,

Here is Paul's name on top of the barrel centered between the scope blocks.

Jack

32 Winchester Special Reamer would appear to clean it up.my first schuetzen was a #1 in 32 Special. it was pretty accurate and considering I was only 27 years old and no old farts helping me out.I used the 319289 with fixed ammo.

Looks much like my 33-30-30 1.75”
My best friend made a 33-30-30 1.5”
We also did a few 30-30 1.5”
All worked great. This was reasonably common in the late 1980s to give higher density loads.
Cheers 
Laurie