Trying to get my Indian three jaw chuck on my WWII Sheldon lathe concentric.....if that's the right word. Close as I can come so far is +-.002. Is that good enough for hobby use? I'm trying to make ferrules for a ramrod for my English muzzleloading shotgun right now, can see a difference in the parts when they screw together, nothing major, but not up to English best quality....Pete