I shot over 500 factory FMJ and SJHP the first time I decided to disassemble the cylinder and yoke of my 66-8 for cleaning. It was not binding up or malfunctioning in any way. I was curious and just wanted to do it as a preventative maintenance thing. It was fairly clean and probably could have easily gone another 500 rounds before cleaning.
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M60 442 642 637 686 686+ 629
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