17 Hornady Hornet factory load measurement

[drewh]

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

[southernman]

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.

[southernman]

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".

[ramos]

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.

[Alex]

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

[hemiallen]

Originally Posted by drewh

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

[drewh]

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

[ramos]

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.

[Dasherr]

Bran new rounds were used.

[trotterlg]

If that is a SAAMI chamber the rounds head space on the rim. Larry