Been holding off entering this thread but here goes anyway. I shot a Carl Gustav Swedish Mauser in .308 in the DCRA 1000 yard stuff in the 1980`s, sling, aperture sights. When freshly bedded with JB Weld accuracy was competitive but the problem is, and when I started to use it I was warned about it, the narrow Mauser rear tang will torgue under recoil and eventually unbed itself by compressing the wood under the tang. There is a metal sleeve around the rear action screw that is supposed to prevent this but it didn`t seem to help. I think that an expert job of pillar bedding in a modern synthetic stock would get around this problem. These are concepts in materials and techniques that were not around in my neck of the woods 25 years ago. Hope this helps.