Custom gunwork out of leslieville chambered my 338 edge imp. And it shoots great. Really the only place I know. Or Bashaw sports. Wherever you decide to take it get in quick. Usually smiths are backed up in work. So hopefully it's getting worked on in the next 3 months of crappy melty and windy weather
I don't think you could AI a break action as you would need to re-face the barrel and set it back to get the correct head space. Anything is possible,but not practical.