Hello, I've just purchased my first AR15 and now I need to get some bulk ammunition. Here's what I've looked at that all comes in the same price range (cheap): - Bear Ammo(Gold, Silver etc) - About $4.80/20 @ Sportsmans Guide - Wolf - About $5.20/20 @ Sportsmans Guide These ammunitions are all steel casing non-reloadable. Are there drawbacks to going with these coated steel casings? I've read quite a bit and there really seems to be no consensus, so I figured I'd ask the local crowd. Please give your experiences with these types of ammo and the +/- rather that just a buy or don't buy. Thanks for the input!