The Forster Products 0.2455" inside neck reamer is a precision case preparation tool for reloaders who want to maintain tight chamber control and consistent bullet seating. This reamer removes excess brass buildup from the inside of rifle case necks—a common result of repeated firing that can interfere with bullet fit and create inconsistent pressures. If you're loading for accuracy-critical rifle disciplines like match shooting or long-range hunting, inside neck reaming is often the difference between mediocre groups and true consistency.
Built from high-grade, wear-resistant tool steel, the Forster reamer is ground to precise tolerances (0.0025" to 0.003" over maximum bullet diameter) and uses a staggered tooth design that cuts smoothly without chatter or chewing up your brass. That matters: smooth cuts mean cleaner case necks and longer tool life. The reamer is sized for 0.2455" diameter, making it suitable for common .25-caliber rifle cartridges. Proper sequencing is key—reaming should happen after cases are fired with a full load and before any sizing operation, which ensures you're removing only truly excessive material.
Checking for the need to ream is straightforward: fire a case with a full load, then try sliding a bullet into the unsized neck by hand. If you feel binding or resistance, excess neck brass is present and reaming (or outside neck turning) becomes necessary. A tubing micrometer lets you measure wall thickness directly, but the bullet-fit test works fine for most reloaders. Forster's inside neck reamers are the go-to choice for precision handloaders who refuse to settle for guesswork in case prep.
Key Features
- High-grade, wear-resistant tool steel construction for durability and precision
- Staggered tooth design minimizes chatter and produces clean, smooth cuts
- Ground to 0.0025" to 0.003" over maximum bullet diameter for optimal fit
- 0.2455" diameter reamer for .25-caliber rifle cartridges
- Removes excess neck brass buildup to improve bullet seating consistency
Specifications
| Reamer Diameter | 0.2455" |
| Material | High-grade wear-resistant tool steel |
| Tolerance | 0.0025" to 0.003" over maximum bullet diameter |
| Tooth Design | Staggered tooth pattern |
| Application | .25-caliber rifle cartridges |
Frequently Asked Questions
When should I ream my rifle case necks?
Inside neck reaming is performed after cases have been fired with a full load and before any sizing operation (neck sizing or full-length sizing). This timing ensures you're only removing excess brass that has actually accumulated.
How do I know if my cases need inside neck reaming?
The simplest test is to slide a bullet into a fired, unsized case neck by hand. If you feel significant binding or resistance, excess brass is present in the neck and reaming or outside neck turning is warranted. You can also measure neck wall thickness with a tubing micrometer for a more precise assessment.
What cartridges does the 0.2455" reamer fit?
This reamer is sized for .25-caliber rifle cartridges. Verify that your specific cartridge requires a 0.2455" inside diameter before ordering.
Will this reamer work for other calibers?
No—this reamer is ground specifically for 0.2455" diameter and is designed for .25-caliber rifles. Forster makes inside neck reamers in other diameters for different calibers.
