I'm looking at purchasing what is likely a well used pistol (SiG) and my first used gun purchase. I was wondering if there is a good but not real technical (IE expensive) way to determine how "bored" out a barrel is. Obviously I'll pull the barrel out and take a look see but I'm not sure I can determine with any real accuracy how much wear is too much unless the grooving is missing in places. If the wear is consistent how loose can it be before I notice an accuracy issue. Was wondering if I take a loose unfired slug and slip it in the barrel and shake it and listen for a rattle :laugh: But seriously folks what say ye. I expect to get treated well by the guy but a new barrel is $150.00 so I'd like to make sure that we both are happy in the end. Ignorance is bliss and hind site is 20/20 right.