If posters review my thoughts on this subject, I have presented a way to check your work. This is standard practice in machine shops every day.
The customer demands that you have a verified method of checking, and verifying your work. Always be aware that a flawed testing method will produce flawed results.
I have also stated that when presented with an imperfect part in the beginning, (in this case, the straightness of a barrels ID with its self), then you are automatically faced with a compromise. How you deal with this compromise determines the final outcome.
As a professional, (how's that for a high fallutin term
), I have to deal with these problems every day as varied jobs com through the door. It is sometimes difficult to discuss these things with those with limited knowledge of what I call "basic machine shop practice".
Always be cognizant of what you are trying to achieve. Develop a set up that allows you to reach this goal with the machinery you have on hand. And always remember that is just as important, perhaps more important, to be aware as to WHY you do things a certain way as well as knowing HOW to do things.
