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Rifles, Reloading, Optics, Equipment
Reloading
Hornady OAL Gauge
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<blockquote data-quote="MagnumManiac" data-source="post: 2246217" data-attributes="member: 10755"><p>Take a case, cut 2 slits in the neck opposite each other, clean up any burrs on the inside and outside, size it, place a bullet in the neck and chamber it gently. Close the bolt, open and close the the bolt gently and slowly a few times, then carefully remove it from the chamber. If the rifle has a plunger ejector, place a finger on the side of the case as you withdraw it so that the bullet makes no contact with the action.</p><p>Measure the COAL/CBTO and compare with the Hornady measurement.</p><p>It won't be exactly the same, but definitely won't be .250" different.</p><p>This measurement should be your 'touching' measurement which will be .003-.005" into the taper cut on the start of the rifling.</p><p>If you do this several times, you will get a feel for doing this very accurately, I no longer bother with Hornady measuring tools, they are clumsy and often not accurate enough.</p><p>My Stoney Point Headspace Gauge set are the only tools I use these days.</p><p>I have found the Sinclair Nut for bullet measuring, RCBS Precision Mic and a few other doodads work perfectly for me in my F-class pursuits. The RCBS Precision Mic is the most accurate headspace measuring tools you can buy, and it covers several cases if based on a parent family, like 30-06 will cover ALL 30-06 based cartridges, as does a 308 etc, etc</p><p>I have actually sold or given away at least half of my doodads I used a few times and found unnecessary. I am now a minimalist with my loading gear. Although every barrel/rifle has it's own set of dies and combinations of dies and mandrels.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 2246217, member: 10755"] Take a case, cut 2 slits in the neck opposite each other, clean up any burrs on the inside and outside, size it, place a bullet in the neck and chamber it gently. Close the bolt, open and close the the bolt gently and slowly a few times, then carefully remove it from the chamber. If the rifle has a plunger ejector, place a finger on the side of the case as you withdraw it so that the bullet makes no contact with the action. Measure the COAL/CBTO and compare with the Hornady measurement. It won’t be exactly the same, but definitely won’t be .250” different. This measurement should be your ‘touching’ measurement which will be .003-.005” into the taper cut on the start of the rifling. If you do this several times, you will get a feel for doing this very accurately, I no longer bother with Hornady measuring tools, they are clumsy and often not accurate enough. My Stoney Point Headspace Gauge set are the only tools I use these days. I have found the Sinclair Nut for bullet measuring, RCBS Precision Mic and a few other doodads work perfectly for me in my F-class pursuits. The RCBS Precision Mic is the most accurate headspace measuring tools you can buy, and it covers several cases if based on a parent family, like 30-06 will cover ALL 30-06 based cartridges, as does a 308 etc, etc I have actually sold or given away at least half of my doodads I used a few times and found unnecessary. I am now a minimalist with my loading gear. Although every barrel/rifle has it’s own set of dies and combinations of dies and mandrels. Cheers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Hornady OAL Gauge
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