I was able to handle a Pietta 7.5" model back in 2010. --->>>
https://www.thehighroad.org/index.php?threads/pietta-1873-c-b-revolver.530254/
At the time, the Pietta 1873 percussion came in a variety of barrel lengths including 11.25" and 9.25".
They have lighter contour barrels than the standard C&B models and are quick handling.
The extra barrel length provides some extra velocity without the extra frame weight.
They're designed to quickly swap cylinders which means more cylinder sales for the company.
They're firing reproductions of an antique model just like replica BB guns, except made for cowboy, western and black powder devotees.
I view anything that a company does to promote the shooting sports while trying to make a profit in a positive light.
These guns make people happy to enjoy shooting whether they want to wear a cowboy hat or not.
Only recently has the 1851 started being made with a 12" barrel besides the Remington 1858.
These are not meant to appeal to everyone, just like other uncommon or bunt line models.
But after production stops they can become more valuable and collectible.
Not everyone wants a Paterson revolver, so the manufacturers offer something a little different for the world wide market.