Just got my Ruger SR1911 and haven't taken it to the range yet. I was strolling by the ammo section of Walmart and saw that steel is going for around $15 a box (of 50) while brass is going anywhere from $21-$25 a box (of 50). I heard steel is rough on your internals and dirty and stuff. Really is it that bad? Seems like it would be worse in my AR than my 1911 considering the abuse i have seen 1911's go through. What are your opinions?