Hello All. Interesting topic. I build custom Mausers and find that even with a "cheap" A&B barrel, I can get wonderful results. The beauty of a custom is you can match the twist for the application you need. If you are looking for a deer rifle, Critter rifle of Dangerous game rifle, you can build it to match the targeted species. I recently finished a 6.5-'06 Ackley built specifically for deer and antelope. I am also working on5 rifles from 257 Ackley to 35 Whelen Improved. Each is a joy in itself. My goal is sub MOA and I haven't failed yet.....in fact, most of my rifles are sub 1/2 MOA. I do this as a hobby and I'm having a blast! I just love custom rifles on a superior Orberndorf or Steyr action.....just doesn't get any better. Good luck and regards, Rick.