I have placed an AYA 12ga.on layaway until our return from Wintering on the Redneck Riviera. It has, I think, the requisite construction: Greener Xbolt, bushed strikers, cheekpieced stock. My preferred round would be .416 Rigby....I have a Ruger no 1 in this and really like it. I note a considerable number of discussions on action selection, but what about selecting a barrel? Start with a blank, takeoff barrels(e.g., I notice there are bunches of Remington 700 bbls on ebay), Something like a Douglas no 5 contour? Not sure where to start? Maybe this is just too general to answer, but thought I'd give it a chance. My immediate thought is to make the monoblock, have the Ellis book back home. Bill