Cut clean, accurate rifle chambers that stand up to professional inspection with the Clymer Rimless Rifle Chambering Reamer – 22-250 Remington Rougher, MFR# R22250. Built specifically for gunsmiths who demand precision and long tool life, this rimless rifle rougher reamer is a critical first step in chambering barrels for the popular .22-250 Remington varmint and precision cartridge. Brownells Deutschland+1
Purpose-Built Rougher Reamer for 22-250 Remington
This model in the Rimless Rifle Chambering Reamers line is the 22-250 Remington rougher, manufacturer part number R22250, matched to Brownells SKU 184050131. Brownells Deutschland+2Brownells Iberica+2
Rougher reamers are designed to remove the bulk of the material before the finishing reamer is used, saving wear on your more expensive finisher and extending the life of your tooling—especially in high-volume or commercial shops. Brownells France+1
Why Use a Rougher Before a Finishing Reamer?
Clymer roughers like R22250 are ground approximately .010" under final chamber size and do not cut the throat, making them ideal for: Brownells UK+2Brownells Österreich+2
Quickly hogging out most of the chamber volume
Reducing cutting load and heat on your finishing reamer
Improving overall tool life and consistency
Maintaining cleaner, smoother finishing cuts
Once the rougher has established the chamber body and basic geometry, you follow up with a Clymer 22-250 Remington finishing reamer (F22250) to bring the chamber to full SAAMI dimensions and cut the throat. Brownells France+1
Made from Premium M-7 High-Speed Steel
Every Clymer rimless rifle chambering reamer is crafted in the USA from best-quality M-7 high-speed steel, chosen for its superior toughness and wear resistance. Brownells France+2Brownells Deutschland+2
Benefits of M-7 HSS for gunsmiths:
Holds sharp cutting edges longer
Resists chipping and premature dulling under heat and pressure
Delivers smoother, chatter-free cuts in properly set-up barrels
These reamers are precision tools for professional gunsmiths and, when properly cared for and lubricated, are designed to provide a lifetime of service. Brownells Österreich+2Brownells France+2
SAAMI-Spec Geometry for Professional Results
Clymer designs their rimless rifle chambering reamers to cut chambers that conform to SAAMI minimum specifications when used correctly with proper gauges and procedures. Clymer Tool+1
Key geometry features of the R22250 rougher reamer:
Style: Rimless rifle, 22-250 Remington
Pilot: Solid pilot to help maintain concentricity with the bore
Flutes: Straight flutes for stable, predictable cutting
Application: Use first as a roughing tool, followed by a finisher
Using a SAAMI-pattern rougher and finisher together helps ensure that your finished chamber:
Ideal for Custom & Precision 22-250 Builds
The 22-250 Remington is a classic, high-velocity varmint and predator cartridge, and a properly cut chamber is essential to extracting its full potential. The R22250 Rimless Rifle Chambering Reamer is well suited for: Manson Reamers+2Pacific Tool & Gauge+2
Custom bolt-action varmint rifles
Heavy-barrel precision builds for prairie dog, coyote, and long-range target work
Professional rebarrel jobs where top-tier accuracy and reliability are required
A dedicated rougher reamer is especially valuable in busy shops that cut many 22-250 chambers and want consistent, repeatable results with minimal tool wear.
Key Specifications – RIMLESS RIFLE CHAMBERING REAMERS R22250
From Clymer and major distributors: Yellowstone Armory+2Brownells Deutschland+2
Tips for Using R22250 in Your Gunsmithing Shop
To get the best performance and longest life from your Clymer 22-250 rougher reamer:
Use Proper Lubrication
Always use a high-quality cutting oil formulated for chambering to keep temperatures down and chips flushing effectively.
Cut Slowly and Evenly
Allow the reamer to do the work. Don’t force it—steady, controlled pressure reduces chatter and improves surface finish.
Clear Chips Frequently
Back the reamer out regularly to clear chips. This prevents scoring, reduces heat, and extends tool life.
Follow with a Finishing Reamer
Once you’re close to full depth with the rougher, switch to the corresponding 22-250 finishing reamer to bring the chamber to final SAAMI dimensions and cut the throat.
Check Headspace with Gauges
Always verify final chamber depth using proper GO/NO-GO gauges before declaring the job complete.
Why Gunsmiths Choose Clymer Rimless Rifle Chambering Reamers
Finest workmanship & quality backed by decades of experience in gunsmithing tools Brownells France+1
Precision-ground M-7 HSS for durability and clean cutting
SAAMI-spec cuts for safe, reliable chambers
Rougher + Finisher system that saves time and money in high-volume work
If you’re chambering barrels in 22-250 Remington and want professional-level tools that deliver consistent, accurate results, the RIMLESS RIFLE CHAMBERING REAMERS R22250 – Clymer 22-250 Rem Rougher Reamer is a proven, gunsmith-trusted choice.
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