Hornady OAL Gauge is Driving me Crazy(er)!

L.Sherm

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Two things, are you trying to measure with a primer in the case and as stated above sort your bullet to batches and measure with that batch only.
I use the hornandy tool also while not perfect I dont have the problem your describing.
Next time you haver a barrel chambered have your smith run the reamer in the muzzle end that he should be cutting off before he crowns to just barely short of the shoulder and it works great for finding the lands on a new barrel and measure your bump.
On a dummy round you can feel it drag on the lands when your touching them by just rotating a dummy round
 

The Oregonian

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Jul 20, 2012
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Missoula, Montana
i use the wheeler method but still learning what to feel for, so I also color with a sharpie. It makes it pretty **** easy and there are no tools or modified cases to buy. I'm done with the Hornady tool.
 

L.Sherm

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I might be confused here when you talk about CBTO are you using the comparator to measure or just trying to find the lands?
If your just trying to find the lands i suggest Alex's method also if possible then measure with a comparator for CBTO for a starting point.
 

Dog Rocket

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Mar 17, 2018
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Washington State
Two issues with Alex Wheelers method:
1) I don't want to punch out the roll pin and remove my ejector everytime I work up a load.

2) Finding your exact "touch" point is irrelevant. It is just one particular datum point to start from. It is no more useful than any other datum point. The precision comes from any subsequent adjustments from that datum point.
 

L.Sherm

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Two issues with Alex Wheelers method:
1) I don't want to punch out the roll pin and remove my ejector everytime I work up a load.

2) Finding your exact "touch" point is irrelevant. It is just one particular datum point to start from. It is no more useful than any other datum point. The precision comes from any subsequent adjustments from that datum point.
I do it when the rifles new should be stripped when checking headspace from getting chambered anyway.
 

L.Sherm

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Finding your exact "touch" point is irrelevant. It is just one particular datum point to start from. It is no more useful than any other datum point. The precision comes from any subsequent adjustments from that datum point.
That is highly debated.
 

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