I have a close friend that took his brand new 11.5 Noveske gun to a combat course last month. After the first 300+ rounds with intermittent breaks the rifle started to keyhole. Subsequently there after the barrel would keyhole rounds after getting mildly hot even the following day. We are trying to determine if this is an isolated problem with what seems to be just a bad barrel. FOR THE RECORD: He has other Noveske products that have worked fine throughout training. But in that session he had to rely on a colt back-up upper.
Thanks, C