I have cut many and not had an issue. I use adjustable HSS reamers, flood coolant, bush the chamber and drive from the chamber end. I try not to take more than .005" on the diameter or .0025" on a the wall per cut cut. I also feed the work under power at a slow rate. Not sure if it is the technique or if I have had a really long lucky spell.
Steve


Firearms imports, consignments


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