Had an old Utica S/W which doubled with annoying regularity before I fixed it. Also 1 oz. loads. I would call the recoil notice-getting rather than horrendous but I managed to bloody the web of my thumb once. The action bar of the wobbly old thing didn't even notice so I'm thinking what you're thinking-- maybe rehardening is bad news in more than the distortion and warpage dept.

jack