I have mixed feelings. I wish it was more of a eat anything 100% of the time, but I realize that the reality of a $600 semi-auto being 100% with everything all the time, maybe a bit much to ask. Honestly, I think that if all I shot weas High Brass, then it would be 100%.
Also, I think the bluing wear is normal. I have seen so many older pump shotguns that show the same kind of wear. I wonder if anyone is not experiencing any wear on the mag tube.