I also agree with Bill, it is hard to tell. Timing is not going to help with accuracy, it will make your action feel better when working the bolt but that is that. Truing COULD help IF your action is really out of alignment. The only way you will know is to have the work done. I have a 30-06 sporter from A&B, not a barrel that you will call "custom" and more in the line of quality as the factory savage barrels and most of the time I was shooting submoa at 100yds. The 7mm rem mag in my signature is a custom barrel and it shoots .6?? or better at 200yds so I would expect any custom barrel to do better than moa with the proper hand load and shooting techniques...