12-05-2017, 09:52 PM
There are some really good threads sticky'd at the top of this section that address the bolt/chamber differences much more competently than I can hope to. In short though, you're right that you would need to have the chamber modified to headspace with a 0.136" bolt, which probably wouldn't make sense given the relative abundance of reasonably priced barrels currently available on the market. I also don't see any reason why the 0.125" bolt would cause your handload accuracy issues, but don't know enough to intelligently comment further so I'll leave that to the gurus who lurk here.