The Forster Products 0.2665" Inside Neck Reamer is a precision case-preparation tool built for reloaders who demand consistent neck wall thickness. If you're working up loads for accuracy-critical shooting—whether that's precision rifle competition, long-range hunting, or load development—controlling case neck concentricity and wall uniformity directly affects bullet seating consistency and downrange performance. This reamer removes excess brass from the interior of the case neck, a step many serious handloaders use to achieve the tighter tolerances that improve group size.
Forster manufactures this tool from high-grade, wear-resistant tool steel ground to a diameter of .0025" to .003" over maximum bullet diameter. The staggered tooth design cuts smoothly without chatter, reducing the risk of work-hardening the brass or producing a rough interior finish. The reamer is sized to work with .2665" bullet diameters (typical of 6.5mm cartridges), so verify your specific caliber before ordering.
Neck reaming belongs in your prep sequence after firing a case with a full load but before sizing. The fired brass expands unevenly, and the reamer trims it back to uniform thickness. If you're unsure whether your cases need reaming, simply try seating a bullet into a fired, unsized case neck—interference means the brass has crept outward and is restricting bullet entry. That's when inside neck reaming becomes part of your workflow.
Key Features
- Precision ground tool steel construction for long tool life
- Staggered tooth design for smooth, chatter-free cutting
- Sized for .2665" bullet diameter (6.5mm calibers)
- Ground to .0025"–.003" over maximum bullet diameter for controlled stock removal
Specifications
| Brand | Forster Products |
| Tool Type | Inside Neck Reamer |
| Caliber/Bullet Diameter | 0.2665" |
| Material | High-grade tool steel |
| Oversize Tolerance | .0025" to .003" over maximum bullet diameter |
Frequently Asked Questions
What calibers does this reamer fit?
This reamer is ground for 0.2665" diameter bullets, which corresponds to 6.5mm cartridges. Always confirm your specific round uses a .2665" bullet diameter before purchasing.
When should I neck ream during the reloading process?
Perform neck reaming after firing the case with a full load but before you run the case through your sizing die. This removes the excess brass that has expanded outward during firing, ensuring uniform neck wall thickness for consistent bullet seating.
How do I know if my cases need inside neck reaming?
A simple field test is to take a fired, unsized case and try to insert a bullet into the neck by hand. If you feel resistance or the bullet won't slide in smoothly, the neck walls are too thick and the case should be reamed.
What tool do I use to check neck wall thickness?
A tubing micrometer is the most precise way to measure case neck wall thickness, though many reloaders start with the simpler bullet-insertion test to identify problem cases.
