Evauluating a new chamber?
- Thread starter liljoe
- Start date
jackie schmidt
New member
Joe
The time to look for things is NOT after the job is finished. What you have to strive for is to follow all of the accepted, and proven, practices to insure that the job is satisfactory.
But, is is good to check everything so you will at least have the peace of mind that things are as they should be.
In the end, you have to settle in on a proven set-up, and trust that it will give the results you desire. If you do see something amiss, figure out why, and strive to correct it.
As a matter of course, I always double check all of my dimensions before I remove the barrel. Of course, that is a good practice to follow with any machining job.
As I have said many times on this Forum, try to learn as much about WHY things are done a certain way, not just how things are done. That way, many of the mysteries that seem to surround this subject will become clear.......jackie
The time to look for things is NOT after the job is finished. What you have to strive for is to follow all of the accepted, and proven, practices to insure that the job is satisfactory.
But, is is good to check everything so you will at least have the peace of mind that things are as they should be.
In the end, you have to settle in on a proven set-up, and trust that it will give the results you desire. If you do see something amiss, figure out why, and strive to correct it.
As a matter of course, I always double check all of my dimensions before I remove the barrel. Of course, that is a good practice to follow with any machining job.
As I have said many times on this Forum, try to learn as much about WHY things are done a certain way, not just how things are done. That way, many of the mysteries that seem to surround this subject will become clear.......jackie
Last edited:
JerrySharrett
Senile Member
The most important consideration is how well the chamber freebore/leade intersect the barrel bore. If you have access to a borescope check this closely. What you are looking for primarily is, are all the ramps of the leade, where they intersect the lands, the same length.
My next consideration would be to check the chamber body dimensions at the front of the body and at the chamber base. If you have an out of alignment tailstock and/or are using some of the so-called "floating" reamer holders you may have an oversize chamber. It can be oversize by as much as 0.005". If it is you will forever have brass sizing problems.
My next consideration would be to check the chamber body dimensions at the front of the body and at the chamber base. If you have an out of alignment tailstock and/or are using some of the so-called "floating" reamer holders you may have an oversize chamber. It can be oversize by as much as 0.005". If it is you will forever have brass sizing problems.
Dave Tooley
Active member
Joe
Get a jewelers loop with a 3-4" focal length. I think mine is 3X with a 4" focal length. After you chamber a barrel patch it out, hold it up to a light and look at the throat. It doesn't take a rocket scientist to see if you did a good job and it will tell you more about concentricity than a bore scope will. In fact you'll see more than you really want to know.
Dave
Get a jewelers loop with a 3-4" focal length. I think mine is 3X with a 4" focal length. After you chamber a barrel patch it out, hold it up to a light and look at the throat. It doesn't take a rocket scientist to see if you did a good job and it will tell you more about concentricity than a bore scope will. In fact you'll see more than you really want to know.
Dave
I was just wondering if there was anything that wasn't really obvious to see. I have looked through a few barrels since I bought my bore scope last year. That was a definite learning experience, actually being able to see down in there finally. Dave, that is how I was looking at the throats before I got my scope. You can see pretty good at the very edge of the lands to see if they are getting washed out.
Thanks
Joe
Thanks
Joe