RIMLESS RIFLE CARTRIDGES Reviews & Ratings

Engineered and ground by one of the most respected names in firearms reamers, Dave Manson. Superb quality reamers made to SAAMI specifications, ground from M7 steel to cut precise chambers capable of outstanding accuracy. Finish Chambering Reamers feature integral throater and solid, fixed pilots. Throating Reamers let you customize a chambering job for non-standard bullets or additional freebore length. Available as finish reamers unless listed otherwise.

SPECS: M7 High speed steel, in-the-white. Solid pilot, six, straight flutes, right-hand cut. Rimfire reamers have 1/4" (6.3mm) diameter round shank. Centerfire reamers have 3/8" (9.5mm) square drive shank. .50 BMG has a 1/2" round shank.

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Reviews Summary

The RIMLESS RIFLE CARTRIDGES reamer has received generally positive reviews for its cutting performance and precision in chambering. Users appreciate its sharpness, ease of use, and ability to produce a fine finish, leading to well-fitted chambers. However, some expressed concerns about inconsistencies, such as rough finishes and short throats. Overall, it's considered a good value by many.

What Reviewers Are Saying

Cutting Performance

70%

Many reviewers highlight the reamer's excellent cutting performance, noting its ability to produce clean, accurate chambers with a nice finish. Users found it effective in achieving precise headspace when used correctly, reflecting its quality. This aspect is frequently mentioned, making it a strong selling point of the product.

User Experience

50%

Several users provided insights about the ease of using the reamer, with many noting that it requires patience and attention to detail for optimal results. Positive remarks often mentioned that the reamer worked well under careful handling, which is essential for success in chambering.

Product Consistency

25%

Though most reviews were favorable, a few users reported issues with inconsistency, mentioning rough finishes or short throats, which could lead to complications in fitting. This mixed feedback indicates varying experiences, suggesting that quality control may need attention.

Value for Money

60%

The product's affordability was noted by multiple reviewers, with many expressing that its performance exceeds its cost. Users believe that the tool is a cost-effective investment, particularly when compared to more expensive alternatives that do not yield better results.

Lubrication and Technique

40%

Several reviews emphasized the importance of lubrication and proper technique when using the reamer. Users suggested using specific oils and frequent cleaning of chips for better performance, highlighting the impact of methodical approaches on the quality of results.

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USING THE 6.5MMX55 RIMLESS FINISHER

i CUT MY CHAMBERS AT ABOUT 60RPM AND FOUND THIS REAMER WAS QUITE GOOD AS IT LEFT A REALLY NICE FINISH AND IT HAS A FAIRLY SHORT THROAT,i HAVE FOUND THAT 140GR NOSLER CUSTOM MATCH PROJECTILES JUST TOUCH THE LANDS AND STILL FEED THROUGH MY SWEDISH MAUSER WITH ABOUT 1/16 TO SPARE IN THE FRONT OF THE MAGAZINE.i JUST WISH i COULD BUY ANOTHER WITH AN ADJUSTABLE PILOT.

Chambering Reamer 280 AI

I am able to give a 5 star rating yet because I haven't used it yet. I am still waiting on a barrel from Shilen. I have used reamers from this company in the past that were excellent.

Would you recommend this? Yes, I would recommend to a friend

by SAM T. SUMMEY on December 02, 2024

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Grabby and prone to chatter

The reamers require significantly more care in use than clymer with worse surface finish. I strongly recommend the clymer when available over the Manson.

by Gregory on September 19, 2025

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Not pleased with this reamer

I cut one chamber with this reamer, and it was the roughest chamber I have ever seen. The reamer left rough spots at the top of the shoulder and significant scratches at the base of the case. I have several solid pilot reamers and none of them have ever given me a problem like this. Also, even though the chamber headspaced correctly, the throat was short and bullets could not be loaded to standard SAAMI length.