Italian SAA barrel threads?

I have a Pietta (I think) SAA with a 7-1/2" barrel that I'd like to rebarrel down to either 5-1/2" or 4-5/8". VTI Gun Parts has the barrels, but the prices and options are much better for Uberti than for Pietta. Several people have suggested that they can't be swapped, however, because the two companies use (or used) different thread sizes and pitches.

Does anyone know for sure?
 
Pietta has used different threads along the years and so did Colt and Uberti ; the only way to be sure is to unlock your barrel and look at the thread. By the way, recent Pietta SAA may present a very strongly locked barrel : good luck !

regards
 
If Pietta threads them like they do their 1858 NMA's, good luck getting the barrel off without heating it. I think they sweat those things on now. A smithy couldn't get the barrel off mine. Definitely see if you can get the current barrel off first.
 
I could not get the barrel of my Pietta EMF Great Western ll to budge no matter what I did. My gunsmith agreed that he has also had that experience with them recently. As said before, good luck if it's a newer Pietta.
 
Ummm ... "locked" as in keyed, pinned, Loctited? Or just torqued down by very large workers?

In my experience no key, pin or loctic ; but such a huge torque that 1/8 of circle was not possible to be screwed when reinstalling the barrel. probably they freeze barrel in Pietta factory : it is a easy way to get the front sight in the correct position without efforts.

Unscrewing this kind of barrel is not for the faint-harted because one has to use such amount of torque that there is a probability to wreck everything : I had to screw so hard my wise (to stop the barrel spining) with a hammer that I though it would break !!!
 
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