I just rebarreled one of my savages to 6.5 creedmoor and the bolt closes easily on a go gauge and I put a .002 piece of paper on the back of my go gauge and it doesnt close, good right? Well I tried a loaded factory hornady case and I get resistance closing the bolt... What do you guys think? This is my first barrel install so I'm not really sure if this is normal
Gunsmithing headspace question...
- Thread starter treyb
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Re: headspace question...
tight chamber maybe?? I know savage has always had some tight chambers.. might have to turn the neck of yourcases a little? someone prob will know more but just a suggestion
tight chamber maybe?? I know savage has always had some tight chambers.. might have to turn the neck of yourcases a little? someone prob will know more but just a suggestion
Re: headspace question...
I would open it up .002 more and see what happens. If it is still tight then you have a different issue. If you use a die with an expander ball you can size a piece without the ball in it and see if it chambers easily. If so you will need to turn your brass(necks).
I would open it up .002 more and see what happens. If it is still tight then you have a different issue. If you use a die with an expander ball you can size a piece without the ball in it and see if it chambers easily. If so you will need to turn your brass(necks).
Re: headspace question...
Ok I went ahead and chambered the same bullet about 10 times and pulled it out and looked at the case, the only bright spots on the case are on the very back of the case head where it contacts the bolt and on the shoulder. Looks like I should be able to back it off a thou or two and not have to turn the necks. What is the actual difference between a go and no-go gauge will it be ok to back it off that much?
Ok I went ahead and chambered the same bullet about 10 times and pulled it out and looked at the case, the only bright spots on the case are on the very back of the case head where it contacts the bolt and on the shoulder. Looks like I should be able to back it off a thou or two and not have to turn the necks. What is the actual difference between a go and no-go gauge will it be ok to back it off that much?
Re: headspace question...
It's usually .006" between Go and Nogo. Back off .002" and try. Factory cases have tolerances, too, so you may have a long toleranced case. Try more cases, see if there's a difference.
It's usually .006" between Go and Nogo. Back off .002" and try. Factory cases have tolerances, too, so you may have a long toleranced case. Try more cases, see if there's a difference.
Re: headspace question...
Look at the junction of the neck and shoulder. There is always a difference in the radius on the brass compared to the chamber. Sometimes this presents itself as a tight chamber which will go away the first time you fire the brass.
Look at the junction of the neck and shoulder. There is always a difference in the radius on the brass compared to the chamber. Sometimes this presents itself as a tight chamber which will go away the first time you fire the brass.
Re: headspace question...
If you reload this is where you want to set your dies to where you are right at .002 of the shoulder(called bumping the shoulder.
A good tool for this is the Hornady case headspace kit used in conjunction with a dial caliper. After you fire a case measure it for a baseline and record it. Ease into the shoulder by starting off with the die adjusted high/long. The neck to base will probably grow as you get close to bumping the shoulder. About ever 5 degrees of rotation you close the gap on the shoulder .001" Good luck
If you reload this is where you want to set your dies to where you are right at .002 of the shoulder(called bumping the shoulder.
A good tool for this is the Hornady case headspace kit used in conjunction with a dial caliper. After you fire a case measure it for a baseline and record it. Ease into the shoulder by starting off with the die adjusted high/long. The neck to base will probably grow as you get close to bumping the shoulder. About ever 5 degrees of rotation you close the gap on the shoulder .001" Good luck
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