Posted 07 August 2008 - 05:51 AM
My personal experience. No "damage".I was shooting a two-day, 1000 round rifle course with an Armalite Ar-15 in 223/5.56 and using Wolf ammo. The green laquer was coming off and depositing in the chamber. I started having problems with the bolt not going into full lockup which led to failure to fire. Because of the malfunction, the unfired cartridge needed to be extracted from the chamber. This was not accomplished with an IAD(immediate action drill). I did need to leave the range, to the tail-gate of the truck, where I was able to perform "repairs". A thorough cleaning of the chamber was needed. Large amounts of hot, gummy laquer were removed from the chamber.I did finish the course with no more malfunctions, but I frequently cleaned the chamber.If a case hesitates from leaving the chamber during the extraction cycle, the rim of the brass case may be torn off by the extractor. If the case is steel, like Wolf, then there may damage to the extractor itself.