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The L.E. Wilson Brass Case Gage takes the guesswork out of loading accurate, consistent 6mm and 6.5 Creedmoor ammo. It's a one-piece tool precision machined from solid U.S. brass bar stock, and it checks two of the most important dimensions in rifle reloading: overall case length and datum-to-head length. Both 6mm and 6.5 Creedmoor share the same headspace case gage, so this single tool covers both chamberings. Just drop a case in, read where it sits against the stepped cutouts, and you know exactly where you stand.
Wilson has been making these gages since Sam Wilson invented the cartridge case gage back in 1935, originally to help a fellow shooter solve a case-separation problem. The brass model is an upgrade over the standard steel line, with brass offering strong corrosion resistance and a smooth surface finish that makes dropping and pulling cases feel clean every time. It's the same proven design reloaders have trusted for decades, just dressed in a nicer material.
The real value here is seeing how far your sizing die pushes the shoulder back. Measure a fired case in the gage first, run it through your full-length die, then drop it back in to see exactly how much setback you created. The step on the head side reads min and max headspace, so you can dial your die for the right clearance, typically a couple thousandths for a bolt gun and a touch more for a semi-auto. Flip to checking case length by setting the case head on a flat surface and sliding the gage over the top to see if the mouth falls within the trim window.
Straight talk: it measures head-to-datum and overall length, not body diameters. That's by design, since body dimensions would interfere with a clean headspace read. Use it with fired brass as your starting point for setting up sizing and trimming, and it'll keep your loaded rounds chambering smoothly round after round.
Yes. Both cartridges share the same headspace case gage, so this single tool covers 6mm Creedmoor and 6.5 Creedmoor. You check the datum-to-head dimension and case length for either one using the same stepped cutouts.
Start by dropping a fired case into the gage and noting where it sits against the head-side step. Run that case through your full-length die, then place it back in the gage to see how much you moved the shoulder. For a bolt gun you're usually looking for around .002 of setback, with a bit more for a semi-auto, and you adjust the die from there.
No, it does not measure body diameters. That's intentional, since the body would interfere with a clean headspace reading. It's built to check head-to-datum length and overall case length so you can set up sizing and trimming off fired brass.
The brass model is an upgrade over Wilson's standard steel line, machined from solid U.S. brass bar stock. Brass gives you good corrosion resistance and a smooth surface finish, which makes dropping and pulling cases feel clean and consistent. Functionally it checks the same dimensions as the steel version.
| UPC | 815145028631 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | CGB-65CRE |
| Shipping Weight | 0.7 |
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