View Full Version : What do I do after I get a barrel blank
June 10, 2008, 12:21 PM
I am trying to find information on what typically to expect would need to be done after receiving a barrel blank.
From what I have been able to find, cutting the barrel to length, crowning, chambering, and then clamping (in my instance) into the action after setting the headspace.
Is this correct? Do you know of any good resources explaining the steps. I have found bits and pieces and I think I am beginnning to understand the process for the most part but have not found a clear explanation so far.
June 10, 2008, 02:05 PM
It would help to know the kind of rifle/pistol/shotgun involved, and whether the blank is just that, or is a replacement barrel.
Also, what equipment do you have? You might need a lathe to turn the blank to the correct diameter. How will you install sights if you want them? How will you do the chambering and crowning? Do you have headspace gauges?
It sounds to me a bit like someone ordering a short block for a car without knowing what installing it entails.
June 10, 2008, 02:14 PM
It is an Anschütz 2013 short barrel (500mm). It will be taken to the point where it is lapped, but I do know that it will need to be cut down to length, the post put in for the tube, and whatever else would need to be done to have it ready to be installed.
I have a gunsmith that can put it in, but I would like to learn as much as possible so that I understand the processes involved prior to going forward with it. My intent isn't to do that work myself at this point. However, I would like to learn.
I do have a lathe and milling machine to do the work in the future.
June 10, 2008, 02:31 PM
If you have good relations with your gunsmith, you would be better asking him just what he is going to do or has done. I am not familiar enough with that rifle to know exactly what will be involved, but I suspect that the order in which things are done will be more important than what is done.
Maybe someone else will provide more help, but good luck. That is a fine rifle and I hope the new barrel shoots for you.
June 10, 2008, 03:53 PM
Thanks, I do want to work with the smith to do the barrel prep and install. I am pretty sure he will not have a problem with it.
June 10, 2008, 05:07 PM
I am not a gunsmith but as I understand it, you would have to turn the blank down to the desired profile and cut it to length. Then turn the shank down to the right diameter to fit the receiver. I do not know how much of a press fit they use (your gunsmith sure better know), but there are also cross pins to cut grooves for. I do not know the sequence of installing, chambering, and headspacing on these guns, but again, your guy should be comfortable with it. Then it has to be crowned, cut for front sight base, and finished.
June 11, 2008, 08:01 PM
It seems to me the tricky part is installing the post. I am not sure how critical its position is, but I think maybe it should be installed first (dovetail?) and then headspacing by facing off the barrel done later. And after the whole thing is set up, the front sight has to be aligned and installed properly.
Deathfire, please forgive my curiosity, but I wonder how much shooting you do that you would wear out the barrel of a single shot .22, then assume you will wear out the replacement barrel. Wow! That takes a lot of shooting!
June 12, 2008, 10:40 AM
Well it has a tube on it, so there is no need for a dovetail. The post is used for lining up the tube, it basically snaps into it.
The barrel isn't wore out (only has about 5000 rounds through it), it just isn't shooting as well as it should be. 10 shot test groups at Eley only produced in the 13 to 14 mm at best.
I do want to try indexing the barrel, going to talk to the gunsmith about that as well. I have never seen a cone breech, so I want to do some research into that.
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