56-50 case length for a Romano Spencer

[dm3280]

I have a Romano Spencer, 56-50, and have had it for a few years now.  I am now starting to really try and get this thing dialed in.  One problem I am having is finding the right case length, not OAL just the case length.  I have looked on this site and other as well and not having good luck finding the info.  With my eyes I may have missed it.  I find lots of info on the Taylor Spencer but I am looking for data on the Romano carbines. 
I have ceeosafe on order but a little afraid of trying to get a chamber cast since the edge of the chamber where the extractor arm is does open into the chamber a little.  Don't want to try and get this stuff out of that tight area.
Some of the cases I have used are anywhere from 1.12 to 1.2.  Afraid the 1.2 are a little too long.
What are other Romano Spencer carbine shootiner trimming their cases to?

Thanks

[Two Flints]

Howdy dm3280,

You might want to contact Appalachian Ed, who is a member of SSS.  I think you can PM him by clicking on his name near the bottom of the SSS first page, or do a search for Romano Spencers, and his name should appear many times.  Appalachian Ed he is our Resident Romano Spencer Expert on SSS.

Two Flints