I'm looking for anyone who can explain what the mechanics are behind the infamous chewed up cases the Sig 556 spits out. I'm looking to acquire this rifle and am also getting into reloading, so I'd like to see if any other reloaders have dealt with this. I've also noticed that the casing ejection process really scratches up the port side of the receiver, any ways of preventing this as well? Thanks in advance for your time.