About a two months ago I had my first reamer break. This was a brand new reamer. I have reamed tens of thousands of barrels over the last 45+ years. There is another custom gunsmith in my community and he has had a couple reamers break over the last year or two. I received a call from a good friend and gunsmith for a government test facility. He chambers literally hundreds of barrels every year. Last week the had two reamers break on him in the same day. He has been doing chamber reaming for twenty years or more and these were a first for him. I am not trying to bash any reamer manufacture, but I am curious if any others are having reamer failures. The failures that I am familiar with have been with both the ream, clean, and lube method and the high pressure flush method. All have been HSS reamers. The reamers all have lost a flute in the shoulder area of the reamer. I have noticed the flutes have been thinner and the grooves been wider on larger diameter cases. Curious to hear your responses.