Cabelas has had 5.56 55gn brass cased Independence brand ammo in stock for 9.99 for 20 rounds the last few times I stopped in. Not sure what it was before, but it seems to burn pretty clean. I used up my last boxes of TulAmmo which has always run dirty and afterwards I put a few boxes of the Independence ammo through my AR and it cleaned it right up.
I'd just pop into your local store every now and then and take a look.
I'd just pop into your local store every now and then and take a look.