Indexing a barrel in the 12 o'clock position ?

[jamesdmock]

Please excuse my ignorance, but if I don't ask, then I won't learn. Many of the top gunsmiths state that most barrels have a "crooked" bore and they machine it so that the bore is at the 12 o'clock position when the chambering is completed. What is the best way to do this? Can one use a range rod in the muzzle and mark the barrel with a sharpie? Should one also check the breech end. Thanks in advance for any input. James

 

[savagedasher]

The chamber end is where the barrel is timed from
Or that is how mine is done

 

[Dusty Stevens]

Please excuse my ignorance, but if I don't ask, then I won't learn. Many of the top gunsmiths state that most barrels have a "crooked" bore and they machine it so that the bore is at the 12 o'clock position when the chambering is completed. What is the best way to do this? Can one use a range rod in the muzzle and mark the barrel with a sharpie? Should one also check the breech end. Thanks in advance for any input. James

Yes you do it while the barrel is getting chambered. When the chamber end is dialed in like you like just find the high spot at the muzzle and time the action accordingly then chamber