Thank you.

Looking around, it looked like there was either no barrel length limit, or it was on the generous side.

SA revolvers were only mentioned twice that I saw, both in the holster rules: Where it says the holster cannot locate the gun butt below the belt (except for single actions), and again where it says leg tiedowns are not permitted ( except for single actions). Yet I found no mention of SA revolvers at all in the Equipment section. If there was a class/category for them, I might consider using one for the heck of it. Otherwise no.