Pietta and Pedersoli muzzleloading shotguns?

[Andy Griffith]

I'm talking about the doubles...
How similar are they? Are stocks with actions possibly interchangeable?

I've already got a 10ga Ped. and love it. I have a 12ga Ped. stock w/locks, but no barrels. I know where some Pietta barrels are, but cannot measure them.

 

[Andy Griffith]

Well, I found out.

The Pietta shotgun barrels will not interchange with Pedersoli barrels.

Now, I did learn something else that I did not know, or at least didn't pay attention to before- Pedersoli makes two different weights of shotguns in 12 gauge: a "Magnum" and an "Upland." The 10ga I have is definitely a magnum (I only believe they make magnums in 10ga), but I have no way to tell if the 12ga stock I have is for a magnum or upland set of barrels- or if they are interchangeable.