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  #1  
Old 03-03-2015, 04:06 AM
drewh drewh is offline
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Default 17 Hornady Hornet factory load measurement

Would like to get a few different folks who have the hornady bullet comparator and some 17 HH ammo to measure length to the shoulder when using a 22 caliber insert. I have a dilemma as to whether the ammo I just bought is long compared to what others have.
Thanks,
Drew
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Old 03-03-2015, 07:16 PM
southernman southernman is offline
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my gear is right in front of me, and the 22 cal insert, fits over the brass until it hits the shoulder of the brass,
.17 hornet 20 v-max, with .17 cal insert. 2.395, 2.396, 2.396, 2.396, 2.392.
measured with hornardy OAL tooling.
hope thats of sum help.
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Old 03-03-2015, 07:21 PM
southernman southernman is offline
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I just re read you post and here is measurments, to brass shoulder with a .22 insert, 2.110, 2.113, 2.110, 2.110, 2.112, 2.111,
good luck.
My insert and hornardy holder measure 1.005".
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  #4  
Old 03-03-2015, 07:31 PM
ramos ramos is offline
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May not be a big deal in this age of CNC controlled machines. However don't be surprised if there are differences between the comparators.

Just an unsolicited, anal observation.

Last edited by ramos; 03-03-2015 at 07:32 PM. Reason: add
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  #5  
Old 03-03-2015, 09:36 PM
Alex Alex is offline
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Default Comparitors

The name says it all! You cannot use one to measure "absolute" values. I have several 17 cal "comparators" and they are nowhere near the same, or at least not closer than 10 thou. This is because the measuring hole is beveled slightly, and not the same between units unless you are very lucky.


The idea works great, but the measurements you make and record in your reloading log MUST be with the same piece!


Alex
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  #6  
Old 03-03-2015, 09:42 PM
hemiallen hemiallen is offline
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Quote:
Originally Posted by drewh View Post
Would like to get a few different folks who have the hornady bullet comparator and some 17 HH ammo to measure length to the shoulder when using a 22 caliber insert. I have a dilemma as to whether the ammo I just bought is long compared to what others have.
Thanks,
Drew
All valid points.

IMHO you really need to give more information on what the "issue" is. It sounds like the new batch closes hard, or not at all, when attempting to chamber it, and older ammo works ok?

Allen
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  #7  
Old 03-04-2015, 05:05 AM
drewh drewh is offline
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Default more info

Thanks for the replies so far. The issue is that I recently had a barrel chambered for 17 HH, because there is factory lead free ammo available. The gunsmith had some factory rounds and these fit the chamber correctly. I bought 2 boxes of new factory Hornady rounds. Measured by the method described my new ones measure 1.120-1.1205 and fired cases measure 1.111-1.1115. The unfired rounds from the gunsmith measured 1.111-1.1115. The rounds I purchased are about 10 thousandths longer than his. I am simply trying to find out, if I buy more in the future, which length I am likely to get and if I need to have the chamber cut deeper. I have the capability of making cases for the chamber as it is, but the whole purpose was to be able to run factory lead free if the components aren't available.

This seems to me like a qc issue with Hornady, that is a pretty wide variation. I have posed the same question to them, and hope for an answer. In the meantime I wanted to see if I could get enough measurements to make an educated guess. I am using a digital caliper with the Hornady attachment so I am zeroing the display with the comparator on there and the caliper closed.

Thanks,
Drew
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  #8  
Old 03-04-2015, 03:18 PM
ramos ramos is offline
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Is there ANY chance that the rounds from the gunsmith were actually reloads? Quite a coincidence that they are exactly the same length as your fired brass.
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  #9  
Old 03-04-2015, 04:04 PM
Dasherr Dasherr is offline
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Bran new rounds were used.
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  #10  
Old 03-04-2015, 09:48 PM
trotterlg trotterlg is offline
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If that is a SAAMI chamber the rounds head space on the rim. Larry
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