Reamer leaving burr

[tobnpr]

Driving the reamer too slow will dull one in a heartbeat.

This.
Without knowing your level of experience with cutting chambers, nor the method used no one can know whether the reamer was defective/dull from the manuf, or if it happened during your process. Not a dig, just sayin'...

The leade is the most critical part of the reamer that needs to stay razor sharp- and is also the part that receives the most use, cutting from the very start to the end (which is why many pre-bore, as it eliminates much of the cutting that would otherwise be done if the reamer cuts the entire chamber). That said, it's a non-issue with a new reamer provided you're not letting the reamer "drag" when the spindle is turning- there must be pressure applied and the flutes cutting as mentioned above.

 

[BCP1980]

Thanks to all who have commented and shared your knowledge and expertise it is greatly appreciated…..I have reached out to the reamer manufacturer and they say they are going to take care of it I will keep you all posted once i hear back from them

 

[msalm]

In reaming, I typically leave 15-20 thou for the final pass, measure headspace, clean everything up, lube heavily and advance reamer pretty slowly. You can ‘feel’ how the reamer is cutting and that last ream is a slow push with an even slower feed at the end. 150-200 rpm. Works for me and the throats end up quite clean.