Ted is exactly right about this. So many things affect regulation of S X S guns. Among them are load being fired (not only payload weight but velocity as well), how tightly the gun is being gripped, and even the weight of the gun itself. I have tested many for regulation and found that little, lightweight sub-gauge guns are much more subject to varying degrees of regulation than are heavier, big bore shotguns.
William Larkin Moore says this about a product they import and sell:
"All Rizzini B. guns have special steel barrels which are proof-tested at 1200 Bars, as well as pattern-tested at the factory."
Someone here, maybe all involved with the exception of Rizzini who I'm certain already knows, need to realize that "pattern testing" and testing for regulation are two entirely different things. "Pattern testing" is not a blanket statement that covers regulation as well, unless it is specified as such in the description.
