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#6142870 - 01/19/16 09:08 AM Anybody have a Hornady overall length gauge for 6.5CM?
HicksHunter Offline


Registered: 01/22/09
Posts: 1536
Loc: Kerrville
Howdy, everyone. I'm starting load development for my 6.5, and I'm hoping that someone here can help me out. I'm hoping to use one of these overall length gauges to measure my max case head to ogive measurement, and it just doesn't make sense for me to purchase one as it'll pretty much be a one-time use thing.

Is there anyone around Kerrville that is willing to let me borrow theirs for a few minutes?


Edited by HicksHunter (01/19/16 10:00 AM)

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#6142908 - 01/19/16 09:33 AM Re: Anybody have a Hornady overall length gauge for 6.5CM? [Re: HicksHunter]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Make it from a brass case. Cut the neck longitudinal, twice 180° from each other. Seat a bullet long, write down the measurement, chamber it, write down the new measurement. Pull the bullet. Adjust the seating stem to get near the post chambered length, but still longer, seat a bullet, repeat the process until you have the die creating the same measurements before chambering and after chambering. When you have the bullet "even" with the lands you will have very faint rifling scratches all the way around the bullet.

I cut necks on a mill, but a Dremel will also work. I have pieces of brass with cut necks for every cartridge I have loaded for, be them mine or for friends. I save them as tools for the next time a get a rifle that I need to find the rifling.
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#6142922 - 01/19/16 09:42 AM Re: Anybody have a Hornady overall length gauge for 6.5CM? [Re: HicksHunter]
jeff1383 Offline
Tracker

Registered: 05/19/11
Posts: 873
Loc: Frisco
At $5.99 per modified case you might as well buy one. Unless you plan on only shooting and taking measurements on 1 specific bullet. In that case hope the rifle loves em

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#6142935 - 01/19/16 09:46 AM Re: Anybody have a Hornady overall length gauge for 6.5CM? [Re: HicksHunter]
Elkhunter49 Online   content
Veteran Tracker

Registered: 06/21/11
Posts: 3275
Loc: Oak Harbor, Slidell La
I can't help you with that but I've got a 6.5 Creedmoor load that I shoot that works very well in my rifle. PM me if you want it! Good Luck!
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#6142945 - 01/19/16 09:52 AM Re: Anybody have a Hornady overall length gauge for 6.5CM? [Re: HicksHunter]
JTPinTX Offline
Woodsman

Registered: 04/01/15
Posts: 182
Loc: TX Panhandle
I use the old Stoney Point (now Hornady) tool that uses a threaded case. I just bought the correct tap for those threads (they are an oddball thread), and I drill and tap all my own cases on the lathe. I take a case fired in my chamber and chuck it in the lathe. Drill it and tap it. Works like a dream. The tap was like $20, but I have tapped a whole bunch of cases for me and friends of mine.

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#6142962 - 01/19/16 10:02 AM Re: Anybody have a Hornady overall length gauge for 6.5CM? [Re: FiremanJG]
HicksHunter Offline


Registered: 01/22/09
Posts: 1536
Loc: Kerrville
Originally Posted By: FiremanJG
Make it from a brass case. Cut the neck longitudinal, twice 180° from each other. Seat a bullet long, write down the measurement, chamber it, write down the new measurement. Pull the bullet. Adjust the seating stem to get near the post chambered length, but still longer, seat a bullet, repeat the process until you have the die creating the same measurements before chambering and after chambering. When you have the bullet "even" with the lands you will have very faint rifling scratches all the way around the bullet.

I cut necks on a mill, but a Dremel will also work. I have pieces of brass with cut necks for every cartridge I have loaded for, be them mine or for friends. I save them as tools for the next time a get a rifle that I need to find the rifling.


This is really interesting, and I might have to give it a shot if I don't just go ahead and buy the case gauge. Thanks for the tip!

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#6142963 - 01/19/16 10:03 AM Re: Anybody have a Hornady overall length gauge for 6.5CM? [Re: jeff1383]
HicksHunter Offline


Registered: 01/22/09
Posts: 1536
Loc: Kerrville
Originally Posted By: jeff1383
At $5.99 per modified case you might as well buy one. Unless you plan on only shooting and taking measurements on 1 specific bullet. In that case hope the rifle loves em


That's a good point. It might be worth it just to get it so I can use it if I decide to change bullets.

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#6142965 - 01/19/16 10:04 AM Re: Anybody have a Hornady overall length gauge for 6.5CM? [Re: HicksHunter]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
It will only cost you time. I'be probably got ten different pieces if brass for ten different chamberings. At $6 a piece, plus $4-ish in shipping, that's a hundred dolla bill I did not spend.
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#6143125 - 01/19/16 11:19 AM Re: Anybody have a Hornady overall length gauge for 6.5CM? [Re: HicksHunter]
JTPinTX Offline
Woodsman

Registered: 04/01/15
Posts: 182
Loc: TX Panhandle
I use mine all the time. Whenever I try new bullets, or to check my throat erosion if accuracy starts falling off and I need to adjust seat depth to compensate, whatever. Whichever method you chose to use, JG's or mine (they both work equally well IMO), I would have a case on hand to check it if I were you.

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#6143147 - 01/19/16 11:30 AM Re: Anybody have a Hornady overall length gauge for 6.5CM? [Re: HicksHunter]
Korean Redneck Online   content


Registered: 06/24/09
Posts: 2277
Loc: Houston
Originally Posted By: HicksHunter
Originally Posted By: FiremanJG
Make it from a brass case. Cut the neck longitudinal, twice 180° from each other. Seat a bullet long, write down the measurement, chamber it, write down the new measurement. Pull the bullet. Adjust the seating stem to get near the post chambered length, but still longer, seat a bullet, repeat the process until you have the die creating the same measurements before chambering and after chambering. When you have the bullet "even" with the lands you will have very faint rifling scratches all the way around the bullet.

I cut necks on a mill, but a Dremel will also work. I have pieces of brass with cut necks for every cartridge I have loaded for, be them mine or for friends. I save them as tools for the next time a get a rifle that I need to find the rifling.


This is really interesting, and I might have to give it a shot if I don't just go ahead and buy the case gauge. Thanks for the tip!


I have tried this exactly based on fjg's recommendation and it worked. The only this I will add is cut the neck shorter so it don't hold the bullet so tightly.

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#6143158 - 01/19/16 11:35 AM Re: Anybody have a Hornady overall length gauge for 6.5CM? [Re: HicksHunter]
redchevy Offline
THF Celebrity

Registered: 10/25/04
Posts: 23463
Loc: Texas
Do you need the comparator, the modified case, or both?
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#6143421 - 01/19/16 01:29 PM Re: Anybody have a Hornady overall length gauge for 6.5CM? [Re: HicksHunter]
HicksHunter Offline


Registered: 01/22/09
Posts: 1536
Loc: Kerrville
I'm going to give JG's method a shot when I get home from work today, so I may not need anything at all.

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#6143432 - 01/19/16 01:35 PM Re: Anybody have a Hornady overall length gauge for 6.5CM? [Re: HicksHunter]
Cleric Offline
Veteran Tracker

Registered: 03/11/12
Posts: 2579
I always look through cabelas bargain bin for these. I have found a few for 1-2$. I found the whole gauge for 5$ once so now have the straight and curved ones.

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#6143479 - 01/19/16 01:59 PM Re: Anybody have a Hornady overall length gauge for 6.5CM? [Re: redchevy]
Korean Redneck Online   content


Registered: 06/24/09
Posts: 2277
Loc: Houston
Originally Posted By: redchevy
Do you need the comparator, the modified case, or both?


I sacrificed a piece of once shot brass that I had already cleaned and resized within my first batch of brass. And yes, to get the most consistent measurement you'll need a bullet comparator. Otherwise u can use of overall length but that leaves room for error in the assumption that all the bullets of one specific type have the same length from the ogive to tip. Measuring from bullet til to bottom of the case is an indirect way of measuring the ogive to bottom of case, which is the number u really want to know. In addition to taking out the assumption of ogive to tip length being the same for a specific bullet, measuring from the bottom of case to ogive gives u a value that is universal to every bullet of that caliber, regardless of weight and model.

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#6143720 - 01/19/16 04:23 PM Re: Anybody have a Hornady overall length gauge for 6.5CM? [Re: HicksHunter]
Buzzsaw Offline
THF Trophy Hunter

Registered: 06/29/11
Posts: 5023
Loc: Frisco, Texas
Gibsons didn't have one?? buy it you will need it in the future
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