The Forster Products 0.2065-inch Inside Neck Reamer (brand part no. NR1204) reams the inside of a case neck to remove the brass buildup — often called a donut — that forms at the neck-shoulder junction on brass that’s been trimmed or formed repeatedly. Restoring a uniform neck wall thickness keeps bullet tension consistent from round to round, which matters for handloaders chasing tight groups and predictable neck tension.

Key Specifications

• Reams to a 0.2065-inch inside-neck diameter, matched to the intended caliber.
• Removes the brass donut that builds up at the neck-shoulder junction on formed or trimmed brass.
• Restores uniform neck wall thickness for consistent bullet tension across a batch of brass.
• Machined from hardened steel for a long service life across repeated reaming sessions.

Frequently Asked Questions

Do I need to ream every piece of brass? Not usually every firing, but brass that’s been trimmed or formed several times, or shows visible neck donuts, benefits from an inside neck ream.

Does this tool cut the outside of the neck too? No, this reamer only addresses the inside of the case neck; outside neck turning is a separate operation with different tooling.

What holds the case while reaming? A case-holding block or trimmer case holder is used to steady the brass while the reamer is worked by hand or chucked in a trimmer.

Buy the Forster Products 0.2065-inch Inside Neck Reamer

Order the Forster Products Inside Neck Reamer from our reloading equipment lineup and keep your brass necks uniform batch after batch. Ships fast from a Lubbock, TX gun shop.