I am building a custom rifle in 7mm Rem mag on a Stevens 200 LA centerfeed action. I plan on shooting the 180 berger hybrids and although the mag box is pretty long at 3.5", it would be nice to make it a bit longer if not too much hassle. I was thinking of making a block that fit tightly in the mag box (my rifle will be blind mag for weight savings) and heating the front of the mag box w a torch and stretching the metal in this region only, even if just 0.1". Has anyone ever tried this? I am waiting on my manners stock still so hard to know how exactly it would line up, but my other savages make me think it would work. Input???


PS, My barrel will be throated to the dummy rounds I send the smith, so no worries there.