The Forster Products 0.3110'' Inside Neck Reamer is a precision reloading tool built for handloaders who want tight, consistent neck fit on their brass. If you're turning out match-grade ammunition or simply want to eliminate excess brass buildup inside case necks, this reamer gets the job done with smooth, chatter-free operation. Forster's inside neck reamers are purpose-built for the often-overlooked task of preparing case necks to exact specifications—a step that pays real dividends in consistency and accuracy downrange.
This reamer is machined from high-grade, wear-resistant tool steel and ground to a diameter that sits 0.0025" to 0.003" over maximum bullet diameter. The staggered tooth design cuts brass smoothly without chatter, which means cleaner walls and less risk of work-hardening or surface damage to your brass. The 0.3110'' size fits standard rifle calibers in that bore range, making it versatile for a variety of reloading operations.
Proper timing matters: neck reaming should happen after firing cases with a full load but before the neck or full-length sizing operation. To check whether your cases need reaming, try sliding a fired, unsized bullet into the neck—if you feel resistance, reaming or outside neck turning is in order. A tubing micrometer lets you measure wall thickness directly, though the bullet-fit test is simpler and just as practical for most loaders.
