Gatsby,

I have no doubt that any modern American shotgun can safely accomodate any English load that wouldn't exceed English proof.

Whether it would shoot well, whether the RBL's adjustable regulation provides sufficient range of adjustments, I cannot know.

Tarawa,

I tried several times to order a Siace rifled shotgun and couldn't get it done. I was told at the time - as recently as a year ago - that there was an Italian gun makers' tax charged each gunmaker per calibre, and that Siace would be charged this tax if they offered a rifled barrel shotgun. I was told, "Get an order of ten together and Siace can afford the tax and can to do it." I spoke with Dewing's in West Palm Beach regarding Siace rifled shotguns. Dewing's does a lot of business with Siace and I would recomend them if you wish to inquire further.

BTW, Siace/Dewing's volunteered to regulate with any Federal load that I specified, with Dewing's handling the shipping of the ammo to Siace, which Dewing's apparently does for Siace cartridge doubles it sells, like 45/70's, 444 Marlins, 30-06, etc.

BTW, I understand that Siace was doing the rifled SxS slugguns for Dakota, but these were a disaster. From all I can tell, the disaster resulted from a complete lack of compatibility between business styles and a resulting lack of communications. For example, Siace was regulating with ammo that Dakota couldn't name.

JPK