While at Walmart yesterday I saw that they actually had .223 ammo, including about 10 boxes of $4.97 Tula. So I bought all the Tula and a few boxes of Federal. Before I could check out though I had two helpful bystanders ask me what I was shooting the Tula out of, so I replied my AR, and then they proceeded to tell me how it would damage my extractor and how the lacquer coating would melt in the chamber exc exc. So naturally I kindly and quickly informed about the various truths and myths surround steel cased ammo.
So, today before shooting I thought I would make it as hard as I could on my AR with the limited amount of ammo I had on hand. First I took out my BCG and completely wiped it dry, leaving just a dried coating of gunzilla on it, and then while firing I alternated mags of steel and brass. Shooting was done out in the Arizona desert, dust was minimal to moderate. No problems with 400 rounds. I know this topic has been beat to death, but I thought I'd beat it some more (just the topic). Thanks for reading, shoot safe.