Several thoughts - - ->
* In 16 inches of bbl the blast and overpressure of supers will be considerable. Consider a linear brake.
* Even with a can,supers will be loud.
* The "clack,clack" of the action will be loud. Much quieter in a "tuned" bolt or single shot gun.
* Consider some of the bullets made for the 6.8SPC (<121grs) at lower than 270Win vels.
* Consider shortening the LOP down to <13 inches unless your knuckles drag the ground when you walk. Makes for a more compact package and faster to shoulder.
Should be a fun project. Love doing stuff like this. Different,is a good thing. --- SAWMAN